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Muthu V, Agarwal R, Rudramurthy SM, Thangaraju D, Shevkani MR, Patel AK, Shastri PS, Tayade A, Bhandari S, Gella V, Savio J, Madan S, Hallur V, Maturu VN, Srinivasan A, Sethuraman N, Sibia RPS, Pujari S, Mehta R, Singhal T, Saxena P, Gupta V, Nagvekar V, Prayag P, Patel D, Xess I, Savaj P, Sehgal IS, Panda N, Rajagopal GD, Parwani RS, Patel K, Deshmukh A, Vyas A, Gandra RR, Sistla SK, Padaki PA, Ramar D, Panigrahi MK, Sarkar S, Rachagulla B, Vallandaramam P, Premachandran KP, Pawar S, Gugale P, Hosamani P, Dutt SN, Nair S, Kalpakkam H, Badhwar S, Kompella KK, Singla N, Prayag A, Singh G, Dhakecha P, Chakrabarti A. Computed tomography findings of COVID-19-associated pulmonary mucormycosis: Data from a multicenter retrospective study (Mucovi2), India. Lung India 2024; 41:221-224. [PMID: 38687235 DOI: 10.4103/lungindia.lungindia_19_24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 02/04/2024] [Indexed: 05/02/2024] Open
Affiliation(s)
- Valliappan Muthu
- Department of Pulmonary Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Ritesh Agarwal
- Department of Pulmonary Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | | | - Deepak Thangaraju
- Department of Microbiology, Kovai Medical Center and Hospital, Coimbatore, Tamil Nadu, India
| | | | - Atul K Patel
- Department of Infectious Diseases, Sterling Hospital, Ahmedabad, Gujarat, India
| | | | - Ashwini Tayade
- Department of Infectious Diseases, Kingsway Hospital, Nagpur, Maharashtra, India
| | - Sudhir Bhandari
- Department of Internal Medicine, Sawai Man Singh Medical College, Jaipur, Rajasthan, India
| | - Vishwanath Gella
- Department of Pulmonary Medicine, Asian Institute of Gastroenterology, Hyderabad, Telangana, India
| | - Jayanthi Savio
- Department of Microbiology, St. John's Medical College and Hospital, Bengaluru, Karnataka, India
| | - Surabhi Madan
- Department of Infectious Diseases, Care Institute of Medical Sciences, Ahmedabad, Gujarat, India
| | - Vinaykumar Hallur
- Department of Microbiology, All India Institute of Medical Science Bhubaneswar, Odisha, India
| | | | - Arjun Srinivasan
- Department of Pulmonary Medicine, Royal Care Hospital, Coimbatore, Tamil Nadu, India
| | - Nandini Sethuraman
- Department of Microbiology, Apollo Hospitals, Chennai, Tamil Nadu, India
| | | | - Sanjay Pujari
- Department of HIV Medicine and Infectious Diseases, Poona Hospital and Research Centre, Pune, Maharashtra, India
| | - Ravindra Mehta
- Department of Pulmonary Medicine, Apollo Hospitals, Bengaluru, Karnataka, India
| | - Tanu Singhal
- Department of Infectious Diseases, Kokilaben Dhirubhai Ambani Hospital and Medical Research Institute, Mumbai, Maharashtra, India
| | - Puneet Saxena
- Department of Pulmonary Medicine, Army Hospital (Research and Referral), New Delhi, India
| | - Varsha Gupta
- Department of Microbiology, Government Medical College, Chandigarh, India
| | - Vasant Nagvekar
- Department of Infectious Diseases, Global Hospital, Mumbai, Maharashtra, India
| | - Parikshit Prayag
- Department of Infectious Diseases, Deenanath Mangeshkar Hospital, Pune, Maharashtra, India
| | - Dharmesh Patel
- Department of Pulmonary Medicine, City Clinic and Bhailal Amin General Hospital, Vadodara, Gujarat, India
| | - Immaculata Xess
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Pratik Savaj
- Department of Infectious Diseases, Institute of Infectious Disease and Critical Care Hospital, Surat, Gujarat, India
| | - Inderpaul Singh Sehgal
- Department of Pulmonary Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Naresh Panda
- Department of Otorhinolaryngology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Gayathri Devi Rajagopal
- Department of Microbiology, Kovai Medical Center and Hospital, Coimbatore, Tamil Nadu, India
| | | | - Kamlesh Patel
- Department of Microbiology and Infection Prevention and Control, Sterling Hospital, Ahmedabad, Gujarat, India
| | - Anuradha Deshmukh
- Department of Microbiology, Kingsway Hospital, Nagpur, Maharashtra, India
| | - Aruna Vyas
- Department of Microbiology, Sawai Man Singh Medical College, Jaipur, Rajasthan, India
| | - Raghava Rao Gandra
- Department of Pulmonary Medicine, Asian Institute of Gastroenterology, Hyderabad, Telangana, India
| | - Srinivas Kishore Sistla
- Department of Otorhinolaryngology, Asian Institute of Gastroenterology, Hyderabad, Telangana, India
| | - Priyadarshini A Padaki
- Department of Microbiology, St. John's Medical College and Hospital, Bengaluru, Karnataka, India
| | - Dharshni Ramar
- Department of Research, Care Institute of Medical Sciences, Ahmedabad, Gujarat, India
| | - Manoj Kumar Panigrahi
- Department of Pulmonary Medicine, All India Institute of Medical Science, Bhubaneswar, Odisha, India
| | - Saurav Sarkar
- Department of Otorhinolaryngology, All India Institute of Medical Science, Bhubaneswar, Odisha, India
| | - Bharani Rachagulla
- Department of Pulmonary Medicine, Yashoda Hospitals, Somajiguda, Hyderabad, Telangana, India
| | | | | | - Sunil Pawar
- Department of Internal Medicine, Government Medical College, Patiala, Punjab, India
| | - Piyush Gugale
- Department of HIV Medicine and Infectious Diseases, Poona Hospital and Research Centre, Pune, Maharashtra, India
| | - Pradeep Hosamani
- Department of Otorhinolaryngology, Apollo Hospitals, Bengaluru, Karnataka, India
| | - Sunil Narayan Dutt
- Department of Otorhinolaryngology, Apollo Hospitals, Bengaluru, Karnataka, India
| | - Satish Nair
- Department of Otorhinolaryngology, Apollo Hospitals, Bengaluru, Karnataka, India
| | | | - Sanjiv Badhwar
- Department of Otorhinolaryngology, Kokilaben Dhirubhai Ambani Hospital and Medical Research Institute, Mumbai, Maharashtra, India
| | - Kiran Kumar Kompella
- Department of Internal Medicine and Infectious Diseases, Army Hospital (Research and Referral), New Delhi, India
| | - Nidhi Singla
- Department of Microbiology, Government Medical College, Chandigarh, India
| | - Amrita Prayag
- Department of Infectious Diseases, Deenanath Mangeshkar Hospital, Pune, Maharashtra, India
| | - Gagandeep Singh
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Poorvesh Dhakecha
- Department of Research, Institute of Infectious Disease and Critical Care Hospital, Surat, Gujarat, India
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Yadav RK, Karmakar S, Raouf Wani A, V V. Pulmonary mucormycosis diagnosed by ultrasound guided percutaneous biopsy: A case series. Indian J Tuberc 2024; 71:225-231. [PMID: 38589128 DOI: 10.1016/j.ijtb.2023.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 09/30/2023] [Accepted: 10/09/2023] [Indexed: 04/10/2024]
Abstract
Pulmonary mucormycosis is a rare but highly lethal fungal infection, usually affecting immunocompromised patients. Pulmonary mucormycosis was also a critical problem that complicated the later part of the clinical course of COVID-19 in India. Early diagnosis of the disease, combined with aggressive treatment, is crucial for patient survival. Fibreoptic bronchoscopy is a useful procedure for diagnosis of pulmonary mucormycosis, but image-guided percutaneous biopsy efficiently samples lesions abutting the chest wall. Biopsy is more yielding than cultures and imaging guided biopsy is required for lesions that cannot be microbiologically confirmed by fibreoptic bronchoscopy. We present a case series of four patients of pulmonary mucormycosis in whom ultrasound guided biopsy clinched the diagnosis. All the four patients were poor surgical candidates and underwent medical management with antifungal agents, and had successful clinical recovery and radiological resolution. Our case series illustrates the utility of ultrasound guided percutaneous biopsy as a diagnostic tool for sampling cavitatory disease due to pulmonary mucormycosis, when fibreoptic bronchoscopy failed to yield a diagnosis and the beneficial role antifungal agents as salvage therapy in poor surgical candidates.
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Affiliation(s)
- Rajesh Kumar Yadav
- Department of Pulmonary Medicine, All India Institute of Medical Sciences, Patna, India
| | - Saurabh Karmakar
- Department of Pulmonary Medicine, All India Institute of Medical Sciences, Patna, India.
| | - Abdul Raouf Wani
- Department of Pulmonary Medicine, All India Institute of Medical Sciences, Patna, India
| | - Vinay V
- Department of Pulmonary Medicine, All India Institute of Medical Sciences, Patna, India
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Azar MM. A Diagnostic Approach to Fungal Pneumonia: An Infectious Diseases Perspective. Chest 2024; 165:559-572. [PMID: 37813181 DOI: 10.1016/j.chest.2023.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 10/01/2023] [Accepted: 10/03/2023] [Indexed: 10/11/2023] Open
Abstract
Although bacteria significantly exceed fungi as the most common cause of lower respiratory tract infection, the incidence of fungal pneumonia is increasing because of a growing at-risk population of immunocompromised individuals as well as anthropogenic global heating and environmental disruption. When a patient presents with a clinical syndrome of pneumonia, a constellation of factors must be considered to determine the probability of a fungal pneumonia, including host factors, epidemiologic exposures, suggestive radiographic patterns, and the presence of a non-resolving pneumonia. In addition, knowledge of clinically important fungal pathogens, their epidemiology, and associated clinical syndromes are key in guiding appropriate diagnostic testing and result interpretation, and ultimately rendering a correct diagnosis of a fungal pneumonia. This article aims to provide a framework for the evaluation and appropriate diagnostic testing of patients with suspected fungal pneumonia.
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Affiliation(s)
- Marwan M Azar
- Department of Medicine, Section of Infectious Diseases and Department of Laboratory Medicine; Yale School of Medicine, New Haven, CT.
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Lamoth F, Prakash K, Beigelman-Aubry C, Baddley JW. Lung and sinus fungal infection imaging in immunocompromised patients. Clin Microbiol Infect 2024; 30:296-305. [PMID: 37604274 DOI: 10.1016/j.cmi.2023.08.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 08/06/2023] [Accepted: 08/13/2023] [Indexed: 08/23/2023]
Abstract
BACKGROUND Imaging is a key diagnostic modality for suspected invasive pulmonary or sinus fungal disease and may help to direct testing and treatment. Fungal diagnostic guidelines have been developed and emphasize the role of imaging in this setting. We review and summarize evidence regarding imaging for fungal pulmonary and sinus disease (in particular invasive aspergillosis, mucormycosis and pneumocystosis) in immunocompromised patients. OBJECTIVES We reviewed data on imaging modalities and findings used for diagnosis of invasive fungal pulmonary and sinus disease. SOURCES References for this review were identified by searches of PubMed, Google Scholar, Embase and Web of Science through 1 April 1 2023. CONTENT Computed tomography imaging is the method of choice for the evaluation of suspected lung or sinus fungal disease. Although no computed tomography radiologic pattern is pathognomonic of pulmonary invasive fungal disease (IFD) the halo sign firstly suggests an angio-invasive pulmonary aspergillosis while the Reversed Halo Sign is more suggestive of pulmonary mucormycosis in an appropriate clinical setting. The air crescent sign is uncommon, occurring in the later stages of invasive aspergillosis in neutropenic patients. In contrast, new cavitary lesions should suggest IFD in moderately immunocompromised patients. Regarding sinus site, bony erosion, peri-antral fat or septal ulceration are reasonably predictive of IFD. IMPLICATIONS Imaging assessment of the lung and sinuses is an important component of the diagnostic work-up and management of IFD in immunocompromised patients. However, radiological features signs have sensitivity and specificity that often vary according to underlying disease states. Periodic review of imaging studies and diagnostic guidelines characterizing imaging findings may help clinicians to consider fungal infections in clinical care thereby leading to an earlier confirmation and treatment of IFD.
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Affiliation(s)
- Frederic Lamoth
- Service of Infectious Diseases, Department of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland; Institute of Microbiology, Department of Laboratory Medicine and Microbiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Katya Prakash
- Division of Infectious Diseases, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Catherine Beigelman-Aubry
- Radiodiagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - John W Baddley
- Division of Infectious Diseases, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA.
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Gullì SP, Hallur V, Kale P, Menezes GA, Russo A, Singla N. From Spores to Solutions: A Comprehensive Narrative Review on Mucormycosis. Diagnostics (Basel) 2024; 14:314. [PMID: 38337830 PMCID: PMC10855476 DOI: 10.3390/diagnostics14030314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/12/2024] Open
Abstract
Mucormycosis is an infrequent but fatal illness that mainly affects patients with uncontrolled diabetes mellitus, diabetic ketoacidosis, solid and hematologic neoplasms, organ transplantation, chronic steroid intake, prolonged neutropenia, iron overload states, neonatal prematurity, severe malnutrition, and HIV. Many cases were reported across the world recently following the COVID-19 pandemic. Recent research has led to a better understanding of the pathogenesis of the disease, and global guidelines are now available for managing this serious infection. Herein, we comprehensively review the etiological agents, pathogenesis, clinical presentations, diagnosis, and management of mucormycosis.
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Affiliation(s)
- Sara Palma Gullì
- Department of Medical and Surgical Sciences, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (S.P.G.); (A.R.)
| | - Vinaykumar Hallur
- Department of Microbiology, All India Institute of Medical Sciences, Bhubaneswar 751019, India
| | - Pratibha Kale
- Department of Clinical Microbiology, Institute of Liver and Biliary Sciences, New Delhi 110070, India;
| | - Godfred Antony Menezes
- Department of Medical Microbiology & Immunology, RAK College of Medical Sciences, Ras Al Khaimah P.O. Box 11172, United Arab Emirates;
| | - Alessandro Russo
- Department of Medical and Surgical Sciences, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (S.P.G.); (A.R.)
| | - Nidhi Singla
- Department of Microbiology, Government Medical College and Hospital, Chandigarh 160030, India;
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6
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Nucci M, Nouér SA. Practical issues related to non-Aspergillus invasive mold infections. Mol Aspects Med 2023; 94:101230. [PMID: 38011770 DOI: 10.1016/j.mam.2023.101230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 11/04/2023] [Accepted: 11/17/2023] [Indexed: 11/29/2023]
Abstract
Infection by non-Aspergillus molds has been increasingly reported. The management of such infections is challenging both for diagnosis and treatment, including the need of well-trained mycologists to properly identify rare fungi, difficulties in distinguishing between contamination, colonization and infection, the lack of randomized studies comparing different drugs or regimens, poor activity of available antifungal agents, lack of correlation between in vitro antifungal susceptibility tests and clinical outcome, and poor prognosis. Mucormycosis and fusariosis are the most frequent non-Aspergillus mold infections. Mucormycosis occurs more frequently in four major groups of patients: solid organ transplant recipients, patients with hematologic malignancies receiving chemotherapy or hematopoietic cell transplantation, diabetic patients, and immunocompetent individuals who suffer various types of skin and soft tissue trauma. Invasive fusariosis occurs almost exclusively in patients with hematologic malignancies. In this review we discuss practical issues related to the management of these and other non-Aspergillus mold infections.
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Affiliation(s)
- Marcio Nucci
- Department of Internal Medicine, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; Grupo Oncoclínicas, Rio de Janeiro, Brazil.
| | - Simone A Nouér
- Department of Infectious Diseases, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
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Yeoh DK, McMullan BJ, Clark JE, Slavin MA, Haeusler GM, Blyth CC. The Challenge of Diagnosing Invasive Pulmonary Aspergillosis in Children: A Review of Existing and Emerging Tools. Mycopathologia 2023; 188:731-743. [PMID: 37040020 PMCID: PMC10564821 DOI: 10.1007/s11046-023-00714-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/07/2023] [Indexed: 04/12/2023]
Abstract
Invasive pulmonary aspergillosis remains a major cause of morbidity and mortality for immunocompromised children, particularly for patients with acute leukaemia and those undergoing haematopoietic stem cell transplantation. Timely diagnosis, using a combination of computed tomography (CT) imaging and microbiological testing, is key to improve prognosis, yet there are inherent challenges in this process. For CT imaging, changes in children are generally less specific than those reported in adults and recent data are limited. Respiratory sampling by either bronchoalveolar lavage or lung biopsy is recommended but is not always feasible in children, and serum biomarkers, including galactomannan, have important limitations. In this review we summarise the current paediatric data on available diagnostic tests for IPA and highlight key emerging diagnostic modalities with potential for future use.
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Affiliation(s)
- Daniel K Yeoh
- Department of Infectious Diseases, Perth Children's Hospital, 15 Hospital Avenue, Perth, WA, 6009, Australia.
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia.
- National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.
- Murdoch Children's Research Institute, Parkville, VIC, Australia.
- Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Perth, WA, Australia.
| | - Brendan J McMullan
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia
- Department of Immunology and Infectious Diseases, Sydney Children's Hospital, Randwick, NSW, Australia
- School of Women's and Children's Health, UNSW, Sydney, NSW, Australia
| | - Julia E Clark
- Infection Management Service, Queensland Children's Hospital, Brisbane, QLD, Australia
- School of Clinical Medicine, Children's Health Queensland Clinical Unit, The University of Queensland, Brisbane, QLD, Australia
| | - Monica A Slavin
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia
- National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Gabrielle M Haeusler
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia
- National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Murdoch Children's Research Institute, Parkville, VIC, Australia
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Department of Infectious Diseases, Royal Children's Hospital, Parkville, VIC, Australia
- The Paediatric Integrated Cancer Service, Melbourne, VIC, Australia
| | - Christopher C Blyth
- Department of Infectious Diseases, Perth Children's Hospital, 15 Hospital Avenue, Perth, WA, 6009, Australia
- Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Perth, WA, Australia
- Department of Microbiology, PathWest Laboratory Medicine WA, Nedlands, WA, Australia
- School of Medicine, University of Western Australia, Perth, WA, Australia
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Casutt A, Lamoth F, Lortholary O, Prior JO, Tonglet A, Manuel O, Bergeron A, Beigelman-Aubry C. Atypical imaging patterns during lung invasive mould diseases: lessons for clinicians. Eur Respir Rev 2023; 32:230086. [PMID: 37758271 PMCID: PMC10523149 DOI: 10.1183/16000617.0086-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 07/13/2023] [Indexed: 09/30/2023] Open
Abstract
Imaging of pulmonary invasive mould diseases (IMDs), which represents a cornerstone in their work-up, is mainly based on computed tomography (CT). The purpose of this review is to discuss their CT features, mainly those related to aspergillosis and mucormycosis. We will especially focus on atypical radiological presentations that are increasingly observed among non-neutropenic emerging populations of patients at risk, such as those receiving novel anticancer therapies or those in the intensive care unit. We will also discuss the interest of other available imaging techniques, mainly positron emission tomography/CT, that may play a role in the diagnosis as well as evaluation of disease extent and follow-up. We will show that any new airway-centred abnormality or caveated lesion should evoke IMDs in mildly immunocompromised hosts. Limitations in their recognition may be due to potential underlying abnormalities that increase the complexity of interpretation of lung imaging, as well as the non-specificity of imaging features. In this way, the differentials of all morphological/metabolic aspects must be kept in mind for the optimal management of patients, as well as the benefit of evaluation of the vascular status.
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Affiliation(s)
- Alessio Casutt
- Division of Pulmonology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
- Division of Pulmonology, Ospedale Regionale di Lugano, Ente Ospedaliero Cantonale (EOC), Lugano, Switzerland
| | - Frédéric Lamoth
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
- Institute of Microbiology, Department of Laboratories, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Olivier Lortholary
- University Paris Cité, Necker Enfants Malades University Hospital, AP-HP, IHU Imagine, Paris, France
- Institut Pasteur, National Reference Center for Invasive Mycoses and Antifungals, Paris, France
| | - John O Prior
- Department of Nuclear Medicine and Molecular Imaging, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Andrea Tonglet
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Oriol Manuel
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
- Transplantation Center, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Anne Bergeron
- Department of Pulmonology, Geneva University Hospital, University of Geneva, Geneva, Switzerland
- A. Bergeron and C. Beigelman-Aubry contributed equally to this work
| | - Catherine Beigelman-Aubry
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV), Lausanne, Switzerland
- A. Bergeron and C. Beigelman-Aubry contributed equally to this work
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9
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Alqarihi A, Kontoyiannis DP, Ibrahim AS. Mucormycosis in 2023: an update on pathogenesis and management. Front Cell Infect Microbiol 2023; 13:1254919. [PMID: 37808914 PMCID: PMC10552646 DOI: 10.3389/fcimb.2023.1254919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 09/05/2023] [Indexed: 10/10/2023] Open
Abstract
Mucormycosis (MCR) is an emerging and frequently lethal fungal infection caused by the Mucorales family, with Rhizopus, Mucor, and Lichtheimia, accounting for > 90% of all cases. MCR is seen in patients with severe immunosuppression such as those with hematologic malignancy or transplantation, Diabetes Mellitus (DM) and diabetic ketoacidosis (DKA) and immunocompetent patients with severe wounds. The recent SARS COV2 epidemy in India has resulted in a tremendous increase in MCR cases, typically seen in the setting of uncontrolled DM and corticosteroid use. In addition to the diversity of affected hosts, MCR has pleiotropic clinical presentations, with rhino-orbital/rhino-cerebral, sino-pulmonary and necrotizing cutaneous forms being the predominant manifestations. Major insights in MCR pathogenesis have brought into focus the host receptors (GRP78) and signaling pathways (EGFR activation cascade) as well as the adhesins used by Mucorales for invasion. Furthermore, studies have expanded on the importance of iron availability and the complex regulation of iron homeostasis, as well as the pivotal role of mycotoxins as key factors for tissue invasion. The molecular toolbox to study Mucorales pathogenesis remains underdeveloped, but promise is brought by RNAi and CRISPR/Cas9 approaches. Important recent advancements have been made in early, culture-independent molecular diagnosis of MCR. However, development of new potent antifungals against Mucorales remains an unmet need. Therapy of MCR is multidisciplinary and requires a high index of suspicion for initiation of early Mucorales-active antifungals. Reversal of underlying immunosuppression, if feasible, rapid DKA correction and in selected patients, surgical debulking are crucial for improved outcomes.
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Affiliation(s)
- Abdullah Alqarihi
- Division of Infectious Diseases, The Lundquist Institute for Biomedical Innovation at Harbor-University of California Los Angeles (UCLA) Medical Center, Torrance, CA, United States
| | - Dimitrios P Kontoyiannis
- Department of Infectious Diseases, Infection Control and Employee Health, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States
| | - Ashraf S Ibrahim
- Division of Infectious Diseases, The Lundquist Institute for Biomedical Innovation at Harbor-University of California Los Angeles (UCLA) Medical Center, Torrance, CA, United States
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
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Lewis RE, Stanzani M, Morana G, Sassi C. Radiology-based diagnosis of fungal pulmonary infections in high-risk hematology patients: are we making progress? Curr Opin Infect Dis 2023; 36:250-256. [PMID: 37431554 PMCID: PMC10351900 DOI: 10.1097/qco.0000000000000937] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
PURPOSE OF REVIEW In patients with hematological malignancies, high-resolution computed tomography (CT) is the recommended imaging approach for diagnosis, staging and monitoring of invasive fungal disease (IFD) but lacks specificity. We examined the status of current imaging modalities for IFD and possibilities for more effective applications of current technology for improving the specificity of IFD diagnosis. RECENT FINDINGS Although CT imaging recommendations for IFD are largely unchanged in the last 20 years, improvements in CT scanner technology and image processing algorithms now allow for technically adequate examinations at much lower radiation doses. CT pulmonary angiography can improve both the sensitivity and specificity of CT imaging for angioinvasive molds in both neutropenic and nonneutropenic patients, through detection of the vessel occlusion sign (VOS). MRI-based approaches also show promise not only for early detection of small nodules and alveolar hemorrhage but can also be used to detect pulmonary vascular occlusion without radiation and iodinated contrast media. 18F-fluorodeoxyglucose (FDG) PET/computed tomography (FDG-PET/CT) is increasingly used to monitor long-term treatment response for IFD, but could become a more powerful diagnostic tool with the development of fungal-specific antibody imaging tracers. SUMMARY High-risk hematology patients have a considerable medical need for more sensitive and specific imaging approaches for IFD. This need may be addressable, in part, by better exploiting recent progress in CT/MRI imaging technology and algorithms to improve the specificity of radiological diagnosis for IFD.
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Affiliation(s)
- Russell E Lewis
- Infectious Diseases, Department of Molecular Medicine, University of Padua, Gabelli, Padua
| | - Marta Stanzani
- Hematopoietic Stem Cell Transplantation and Cellular Therapy, Hematology Unit, Regional Hospital Ca’ Foncello, AULSS 2- Marca Trevigiana, Piazza Ospedale
| | - Giovanni Morana
- Department of Radiology, Regional Hospital Ca’ Foncello, AULSS 2- Marca Trevigiana. Piazza Ospedale 1, Treviso
| | - Claudia Sassi
- Pediatric and Adult CardioThoracic and Vascular, Oncohematologic and Emergency Radiology Unit, DIMEC-Dipartimento di Scienze Mediche e Chirurgiche, University of Bologna, IRCCS S. Orsola-Malpighi Hospital, Bologna, Italy
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11
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Lynch JP, Zhanel GG. Part 2: Mucormycosis: Focus on Therapy. Expert Rev Anti Infect Ther 2023. [PMID: 37300820 DOI: 10.1080/14787210.2023.2224564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 05/25/2023] [Indexed: 06/12/2023]
Abstract
INTRODUCTION Mucormycosis (MCR) a rare but life-threatening infection occurs primarily in immunocompromised hosts. Mortality rates with invasive MCR are high (>30-50%), up to 90% with disseminated disease, but lower (10-30%) with localized cutaneous disease. Due to the rarity of MCR, randomized, controlled therapeutic trials are lacking. Lipid formulations of amphotericin B (LFAB) are the mainstay of therapy but oral triazoles (posaconazole and isavuconazole) may be effective as step-down therapy or in MCR cases refractory to or intolerant of LFAB. Early surgical debridement or excision play important adjunctive roles in localized invasive disease. Control of hyperglycemia in diabetic patients, correction of neutropenia and reduction of immunosuppressive therapy is critical for optimal survival. AREAS COVERED The authors discuss various therapeutic options for mucormycosis. A literature search of mucormycosis therapies was performed via PubMed (up to December 2022), using the key words: invasive fungal infections; mold; mucormycosis; Mucorales; amphotericin B; isavuconazole; posaconazole. EXPERT OPINION Randomized, controlled therapeutic trials are lacking. Lipid formulations of amphotericin B (LFAB) are the mainstay of therapy but oral triazoles (posaconazole and isavuconazole) may be effective as step-down therapy, in MCR cases refractory to or intolerant of LFAB. We encourage early surgical debridement or excision as adjunctive measures.
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Affiliation(s)
- Joseph P Lynch
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, the David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - George G Zhanel
- Department of Medical Microbiology/Infectious Diseases, Max Rady College of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
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12
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Yang N, Zhang L, Feng S. Clinical Features and Treatment Progress of Invasive Mucormycosis in Patients with Hematological Malignancies. J Fungi (Basel) 2023; 9:jof9050592. [PMID: 37233303 DOI: 10.3390/jof9050592] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 05/11/2023] [Accepted: 05/16/2023] [Indexed: 05/27/2023] Open
Abstract
The incidence rate of invasive mucormycosis (IM) in patients with hematological malignancies (HMs) is increasing year by year, ranging from 0.07% to 4.29%, and the mortality rate is mostly higher than 50%. With the ongoing pandemic of COVID-19, COVID-19-associated mucormycosis (CAM) also became a global health threat. Patients with high risk factors such as active HMs, relapsed/refractory leukemia, prolonged neutropenia may still develop breakthrough mucormycosis (BT-MCR) even under the prophylaxis of Mucorales-active antifungals, and such patients often have higher mortality. Rhizopus spp. is the most common genus associated with IM, followed by Mucor spp. and Lichtheimia spp. Pulmonary mucormycosis (PM) is the most common form of IM in patients with HMs, followed by rhino-orbital-cerebral mucormycosis (ROCM) and disseminated mucormycosis. The prognosis of IM patients with neutrophil recovery, localized IM and receiving early combined medical-surgical therapy is usually better. As for management of the disease, risk factors should be eliminated firstly. Liposome amphotericin B (L-AmB) combined with surgery is the initial treatment scheme of IM. Those who are intolerant to L-AmB can choose intravenous formulations or tablets of isavuconazole or posaconazole. Patients who are refractory to monotherapy can turn to combined antifungals therapy.
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Affiliation(s)
- Nuobing Yang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- Tianjin Institutes of Health Science, Tianjin 301600, China
| | - Lining Zhang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- Tianjin Institutes of Health Science, Tianjin 301600, China
| | - Sizhou Feng
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- Tianjin Institutes of Health Science, Tianjin 301600, China
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13
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Meli M, Spicuzza L, Comella M, La Spina M, Trobia GL, Parisi GF, Di Cataldo A, Russo G. The Role of Ultrasound in the Diagnosis of Pulmonary Infection Caused by Intracellular, Fungal Pathogens and Mycobacteria: A Systematic Review. Diagnostics (Basel) 2023; 13:diagnostics13091612. [PMID: 37175003 PMCID: PMC10177819 DOI: 10.3390/diagnostics13091612] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/11/2023] [Accepted: 04/13/2023] [Indexed: 05/15/2023] Open
Abstract
BACKGROUND Lung ultrasound (LUS) is a widely available technique allowing rapid bedside detection of different respiratory disorders. Its reliability in the diagnosis of community-acquired lung infection has been confirmed. However, its usefulness in identifying infections caused by specific and less common pathogens (e.g., in immunocompromised patients) is still uncertain. METHODS This systematic review aimed to explore the most common LUS patterns in infections caused by intracellular, fungal pathogens or mycobacteria. RESULTS We included 17 studies, reporting a total of 274 patients with M. pneumoniae, 30 with fungal infection and 213 with pulmonary tuberculosis (TB). Most of the studies on M. pneumoniae in children found a specific LUS pattern, mainly consolidated areas associated with diffuse B lines. The typical LUS pattern in TB consisted of consolidation and small subpleural nodes. Only one study on fungal disease reported LUS specific patterns (e.g., indicating "halo sign" or "reverse halo sign"). CONCLUSIONS Considering the preliminary data, LUS appears to be a promising point-of-care tool, showing patterns of atypical pneumonia and TB which seem different from patterns characterizing common bacterial infection. The role of LUS in the diagnosis of fungal disease is still at an early stage of exploration. Large trials to investigate sonography in these lung infections are granted.
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Affiliation(s)
- Mariaclaudia Meli
- Pediatric Hematology and Oncology Unit, Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
| | - Lucia Spicuzza
- Pulmology Unit, Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
| | - Mattia Comella
- Pediatric Hematology and Oncology Unit, Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
| | - Milena La Spina
- Pediatric Hematology and Oncology Unit, Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
| | - Gian Luca Trobia
- Pediatrics and Pediatric Emergency Room, Cannizzaro Emergency Hospital, 95126 Catania, Italy
| | - Giuseppe Fabio Parisi
- Pediatric Pulmology Unit, Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
| | - Andrea Di Cataldo
- Pediatric Hematology and Oncology Unit, Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
| | - Giovanna Russo
- Pediatric Hematology and Oncology Unit, Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
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14
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Kundu P, Gupta N, Sood N. The Fragile Patient: Considerations in the Management of Invasive Mould Infections (IMIs) in India. Cureus 2023; 15:e38085. [PMID: 37252469 PMCID: PMC10209389 DOI: 10.7759/cureus.38085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/24/2023] [Indexed: 05/31/2023] Open
Abstract
Invasive mould infections (IMIs), which are mostly caused by Aspergillus spp. and Mucormycetes, are opportunistic infections that impose a substantial threat to patients who are considered to be 'fragile'. There is no fixed definition for fragile patients; however, patients with cancer or acquired immunodeficiency syndrome (AIDS), patients who have undergone organ transplants, and patients being treated in the intensive care units (ICUs) were considered fragile. Management of IMIs in fragile patients is challenging, owing to their compromised immune status. The diagnostic challenges associated with IMIs due to insufficient sensitivity and specificity of the current diagnostic tests lead to delayed treatment. A widening demographic of at-risk patients and a broadening spectrum of pathogenic fungi have added to the challenges to ascertain a definite diagnosis. A recent surge of mucormycosis associated with SARS-CoV-2 infections and the resultant steroid usage has been reported. Liposomal amphotericin B (L-AmB) is the mainstay for treating mucormycosis while voriconazole has displaced amphotericin B as the mainstay for treating Aspergillus infection due to its better response, improved survival, and fewer severe side effects. The selection of antifungal treatment has to be subjected to more scrutiny in fragile patients owing to their comorbidities, organ impairment, and multiple ongoing treatment modalities. Isavuconazole has been documented to have a better safety profile, stable pharmacokinetics, fewer drug-drug interactions, and a broad spectrum of coverage. Isavuconazole has thus found its place in the recommendations and can be considered a suitable option for treating fragile patients with IMIs. In this review, the authors have critically appraised the challenges in ascertaining an accurate diagnosis and current management considerations and suggested an evidence-based approach to managing IMIs in fragile patients.
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Affiliation(s)
| | - Neha Gupta
- Internal Medicine, Fortis Memorial Research Institute, Gurugram, IND
- Internal Medicine, Medanta - The Medicity, Gurugram, IND
| | - Nitin Sood
- Hematology and Oncology/Stem Cell Transplant, Cancer Institute, Medanta - The Medicity, Gurugram, IND
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15
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Management of Invasive Infections in Diabetes Mellitus: A Comprehensive Review. BIOLOGICS 2023. [DOI: 10.3390/biologics3010004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Patients with diabetes often have more invasive infections, which may lead to an increase in morbidity. The hyperglycaemic environment promotes immune dysfunction (such as the deterioration of neutrophil activity, antioxidant system suppression, and compromised innate immunity), micro- and microangiopathies, and neuropathy. A greater number of medical interventions leads to a higher frequency of infections in diabetic patients. Diabetic individuals are susceptible to certain conditions, such as rhino-cerebral mucormycosis or aspergillosis infection. Infections may either be the primary symptom of diabetes mellitus or act as triggers in the intrinsic effects of the disease, such as diabetic ketoacidosis and hypoglycaemia, in addition to increasing morbidity. A thorough diagnosis of the severity and origin of the infection is necessary for effective treatment, which often entails surgery and extensive antibiotic use. Examining the significant issue of infection in individuals with diabetes is crucial. Comprehensive research should examine why infections are more common amongst diabetics and what the preventive treatment strategies could be.
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16
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Yu N, Ye S, Yang Z, Chen Z, Zhang C. Disseminated Cunninghamella elegans Infection Diagnosed by mNGS During Induction Therapy in a Child With Intermediate-risk Acute Lymphoblastic Leukemia: A Case Report and Review of Literature. J Pediatr Hematol Oncol 2023; 45:e266-e271. [PMID: 36730964 DOI: 10.1097/mph.0000000000002577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 09/17/2022] [Indexed: 02/04/2023]
Abstract
We described a 14-year-old girl with acute lymphoblastic leukemia who developed disseminated mucormycosis during induction therapy. Disseminated Cunninghamella elegans infection was confirmed by histopathology, microbiological culture, and metagenomic next-generation sequencing analysis of skin tissue, blood, and cerebrospinal fluid. Subsequently, the patient received a combination of liposomal amphotericin B, posaconazole, and caspofungin for antifungal treatment, but eventually died because of severe fungal pneumonia, respiratory failure, and septic shock. Moreover, case reports of pulmonary mucormycosis in children published since 1959 were reviewed. In summary, metagenomic next-generation sequencing is an effective diagnostic method for Cunninghamella with high speed and sensitivity.
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Affiliation(s)
- Nan Yu
- Department of PICU, National Clinical Research Center for Child Health, the Children's Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
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17
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What Is New in Pulmonary Mucormycosis? J Fungi (Basel) 2023; 9:jof9030307. [PMID: 36983475 PMCID: PMC10057210 DOI: 10.3390/jof9030307] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/14/2023] [Accepted: 02/16/2023] [Indexed: 03/06/2023] Open
Abstract
Mucormycosis is a rare but life-threatening fungal infection due to molds of the order Mucorales. The incidence has been increasing over recent decades. Worldwide, pulmonary mucormycosis (PM) presents in the lungs, which are the third main location for the infection after the rhino-orbito-cerebral (ROC) areas and the skin. The main risk factors for PM include hematological malignancies and solid organ transplantation, whereas ROC infections are classically favored by diabetes mellitus. The differences between the ROC and pulmonary locations are possibly explained by the activation of different mammalian receptors—GRP78 in nasal epithelial cells and integrin β1 in alveolar epithelial cells—in response to Mucorales. Alveolar macrophages and neutrophils play a key role in the host defense against Mucorales. The diagnosis of PM relies on CT scans, cultures, PCR tests, and histology. The reversed halo sign is an early, but very suggestive, sign of PM in neutropenic patients. Recently, the serum PCR test showed a very encouraging performance for the diagnosis and follow-up of mucormycosis. Liposomal amphotericin B is the drug of choice for first-line therapy, together with correction of underlying disease and surgery when feasible. After a stable or partial response, the step-down treatment includes oral isavuconazole or posaconazole delayed release tablets until a complete response is achieved. Secondary prophylaxis should be discussed when there is any risk of relapse, such as the persistence of neutropenia or the prolonged use of high-dose immunosuppressive therapy. Despite these novelties, the mortality rate from PM remains higher than 50%. Therefore, future research must define the place for combination therapy and adjunctive treatments, while the development of new treatments is necessary.
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18
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Gali V, Kaltsas A, Cintrón M, Papanicolaou GA, Lee YJ. Concurrent pulmonary Aspergillus and non-Aspergillus mold infections in allogeneic hematopoetic cell transplant recipients. Transpl Immunol 2023; 76:101745. [PMID: 36379375 PMCID: PMC9839572 DOI: 10.1016/j.trim.2022.101745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 11/07/2022] [Accepted: 11/09/2022] [Indexed: 11/13/2022]
Abstract
Patients with hematologic malignancies and recipients of hematopoietic cell transplantation (HCT) are at high risk for invasive mold infections (IMIs). However, risk factors and clinical manifestations are similar between Aspergillus spp. and non-Aspergillus spp. IMIs. Herein, we describe three HCT recipients who had probable invasive pulmonary Aspergillus and non-Aspergillus co-infections. Antifungal agents were changed to voriconazole in two cases where, ultimately, non-Aspergillus molds were diagnosed after these patients died. Our cases highlight the need for better fungal diagnostics in immunocompromised patients. Clinicians should be aware that Aspergillus spp. and non-Aspergillus spp. IMIs can occur concurrently.
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Affiliation(s)
- Varshini Gali
- Weill Cornell Medical College, New York, NY, United States of America
| | - Anna Kaltsas
- Weill Cornell Medical College, New York, NY, United States of America; Infectious Diseases Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, United States of America
| | - Melvilí Cintrón
- Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, United States of America
| | - Genovefa A Papanicolaou
- Weill Cornell Medical College, New York, NY, United States of America; Infectious Diseases Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, United States of America
| | - Yeon Joo Lee
- Weill Cornell Medical College, New York, NY, United States of America; Infectious Diseases Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, United States of America.
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19
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Puerta-Alcalde P, Garcia-Vidal C. Non- Aspergillus mould lung infections. Eur Respir Rev 2022; 31:31/166/220104. [PMID: 36261156 DOI: 10.1183/16000617.0104-2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 07/24/2022] [Indexed: 12/20/2022] Open
Abstract
Non-Aspergillus filamentous fungi causing invasive mould infections have increased over the last years due to the widespread use of anti-Aspergillus prophylaxis and increased complexity and survival of immunosuppressed patients. In the few studies that have reported on invasive mould infection epidemiology, Mucorales are the most frequently isolated group, followed by either Fusarium spp. or Scedosporium spp. The overall incidence is low, but related mortality is exceedingly high. Patients with haematological malignancies and haematopoietic stem cell transplant recipients comprise the classical groups at risk of infection for non-Aspergillus moulds due to profound immunosuppression and the vast use of anti-Aspergillus prophylaxis. Solid organ transplant recipients also face a high risk, especially those receiving lung transplants, due to direct exposure of the graft to mould spores with altered mechanical and immunological elimination, and intense, associated immunosuppression. Diagnosing non-Aspergillus moulds is challenging due to unspecific symptoms and radiological findings, lack of specific biomarkers, and low sensitivity of cultures. However, the advent of molecular techniques may prove helpful. Mucormycosis, fusariosis and scedosporiosis hold some differences regarding clinical paradigmatic presentations and preferred antifungal therapy. Surgery might be an option, especially in mucormycosis. Finally, various promising strategies to restore or enhance the host immune response are under current evaluation.
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20
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Zhang M, Lu W, Xie D, Wang J, Xiao X, Pu Y, Meng J, Lyu H, Zhao M. Metagenomic Next-Generation Sequencing for Diagnostically Challenging Mucormycosis in Patients with Hematological Malignancies. Infect Drug Resist 2022; 15:7509-7517. [PMID: 36570711 PMCID: PMC9784388 DOI: 10.2147/idr.s393201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 11/26/2022] [Indexed: 12/23/2022] Open
Abstract
Background Metagenomic next-generation sequencing (mNGS) is a fast, sensitive and accurate diagnostic method for pathogens detection. However, reports on the application of mNGS in mucormycosis remain scarce. Methods From January 2019 to December 2021, we recruited 13 patients with hematological malignancies who were suspected of mucormycosis and completed mNGS in D20. Then we retrospectively analyze the clinical data, diagnosis, therapeutic process, and outcomes. In order to evaluate the diagnostic value of mNGS in hematological malignancies patients with suspected mucormycosis. Results All patients had high risk factors of Invasive Fungal Disease, including hematopoietic stem cell transplantation, immunosuppression, glucocorticoids, etc. The clinical presentations were pulmonary (n=9), rhino-orbito-cerebral (n=4). But the manifestations were nonspecific. All enrolled patients completed mNGS. And most (8/13, 61.54%) of the samples were from blood. Fungi can be detected in all specimens, including Rhizopus (n=7), Rhizomucor (n=4) and Mucor (n=2). In addition, 7/13 (53.85%) specimens were detected bacteria at the same time and virus were detected in 5/13 (38.46%). Histopathological examination was completed in 5 patients, 3 of which were completely consistent with the results of mNGS. After treatment, 6 patients were cured, while the other 7 patients died. Conclusion mNGS may be a complementary method for early diagnosis, especially for patients who are not suitable for histopathology examination or unable to obtain culture specimen. mNGS can also help detect bacteria and viruses simultaneously, allowing for appropriate and timely antibiotic administration and thus improving patient outcomes.
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Affiliation(s)
- Meng Zhang
- First Center Clinic College of Tianjin Medical University, Tianjin, 300192, People’s Republic of China
| | - Wenyi Lu
- Department of Hematology, Tianjin First Central Hospital, Tianjin, 300192, People’s Republic of China
| | - Danni Xie
- First Center Clinic College of Tianjin Medical University, Tianjin, 300192, People’s Republic of China
| | - Jiaxi Wang
- First Center Clinic College of Tianjin Medical University, Tianjin, 300192, People’s Republic of China
| | - Xia Xiao
- Department of Hematology, Tianjin First Central Hospital, Tianjin, 300192, People’s Republic of China
| | - Yedi Pu
- Department of Hematology, Tianjin First Central Hospital, Tianjin, 300192, People’s Republic of China
| | - Juanxia Meng
- Department of Hematology, Tianjin First Central Hospital, Tianjin, 300192, People’s Republic of China
| | - Hairong Lyu
- Department of Hematology, Tianjin First Central Hospital, Tianjin, 300192, People’s Republic of China
| | - Mingfeng Zhao
- Department of Hematology, Tianjin First Central Hospital, Tianjin, 300192, People’s Republic of China,Correspondence: Mingfeng Zhao; Hairong Lyu, Department of Hematology, Tianjin First Central Hospital, Tianjin, 300192, People’s Republic of China, Email ;
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21
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Alkhamiss AS, Ahmed AA, Rasheed Z, Alghsham R, Shariq A, Alsaeed T, Althwab SA, Alsagaby S, Aljohani ASM, Alhumaydhi FA, Alduraibi SK, Alduraibi AK, Alhomaidan HT, Allemailem KS, Alharbi RA, Alamro SA, Alqusayer AM, Alharbi SA, Alharby TA, Almujaydil MS, Mousa AM, Alghaniam SA, Alghunaim AA, Alghamdi R, Fernández N, Al Abdulmonem W. Mucormycosis co-infection in COVID-19 patients: An update. Open Life Sci 2022; 17:917-937. [PMID: 36045713 PMCID: PMC9372758 DOI: 10.1515/biol-2022-0085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/09/2022] [Accepted: 04/15/2022] [Indexed: 01/08/2023] Open
Abstract
Mucormycosis (MCM) is a rare fungal disorder that has recently been increased in parallel with novel COVID-19 infection. MCM with COVID-19 is extremely lethal, particularly in immunocompromised individuals. The collection of available scientific information helps in the management of this co-infection, but still, the main question on COVID-19, whether it is occasional, participatory, concurrent, or coincidental needs to be addressed. Several case reports of these co-infections have been explained as causal associations, but the direct contribution in immunocompromised individuals remains to be explored completely. This review aims to provide an update that serves as a guide for the diagnosis and treatment of MCM patients' co-infection with COVID-19. The initial report has suggested that COVID-19 patients might be susceptible to developing invasive fungal infections by different species, including MCM as a co-infection. In spite of this, co-infection has been explored only in severe cases with common triangles: diabetes, diabetes ketoacidosis, and corticosteroids. Pathogenic mechanisms in the aggressiveness of MCM infection involves the reduction of phagocytic activity, attainable quantities of ferritin attributed with transferrin in diabetic ketoacidosis, and fungal heme oxygenase, which enhances iron absorption for its metabolism. Therefore, severe COVID-19 cases are associated with increased risk factors of invasive fungal co-infections. In addition, COVID-19 infection leads to reduction in cluster of differentiation, especially CD4+ and CD8+ T cell counts, which may be highly implicated in fungal co-infections. Thus, the progress in MCM management is dependent on a different strategy, including reduction or stopping of implicit predisposing factors, early intake of active antifungal drugs at appropriate doses, and complete elimination via surgical debridement of infected tissues.
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Affiliation(s)
- Abdullah S Alkhamiss
- Department of Pathology, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Ahmed A Ahmed
- Research Center, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Zafar Rasheed
- Department of Medical Biochemistry, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Ruqaih Alghsham
- Department of Pathology, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Ali Shariq
- Departments of Microbiology, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Thamir Alsaeed
- Department of Pathology, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Sami A Althwab
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Suliman Alsagaby
- Department of Medical Laboratories Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah, Saudi Arabia
| | - Abdullah S M Aljohani
- Department of Veterinary Medicine, College of Agricultural and Veterinary Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Fahad A Alhumaydhi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraidah, Saudi Arabia
| | - Sharifa K Alduraibi
- Department of Radiology, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Alaa K Alduraibi
- Department of Radiology, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Homaidan T Alhomaidan
- Department of Family and Community Medicine, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Khaled S Allemailem
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraidah, Saudi Arabia
| | - Raya A Alharbi
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Samar A Alamro
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Arwa M Alqusayer
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Sahim A Alharbi
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Thekra A Alharby
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Mona S Almujaydil
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Ayman M Mousa
- Department of Basic Health Sciences, College of Applied Medical Sciences, Qassim University, Buraidah, Saudi Arabia.,Department of Histology and Cell Biology, Faculty of Medicine, Benha University, Benha, Egypt
| | - Sultan A Alghaniam
- Department of Clinical Nutrition, Qassim Health Affairs, Ministry of Health, Buraidah, Saudi Arabia
| | | | - Rana Alghamdi
- Department of Chemistry, Science and Arts College, Rabigh Campus, King Abdulaziz University, Jeddah, Saudi Arabia
| | | | - Waleed Al Abdulmonem
- Department of Pathology, College of Medicine, Qassim University, Buraidah, Saudi Arabia
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22
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Dark Mold Infections in Solid Organ Transplant Recipients. CURRENT FUNGAL INFECTION REPORTS 2022. [DOI: 10.1007/s12281-022-00436-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Wang J, Wang Y, Han F, Chen J. Multiple diagnostic methods for mucormycosis: A retrospective case series. J Clin Lab Anal 2022; 36:e24588. [PMID: 35792018 PMCID: PMC9396201 DOI: 10.1002/jcla.24588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/08/2022] [Accepted: 06/25/2022] [Indexed: 12/29/2022] Open
Affiliation(s)
- JiaXin Wang
- Kidney Disease Center, The First Affiliated Hospital, College of Medicine Zhejiang University Hangzhou China
| | - YaoMin Wang
- Kidney Disease Center, The First Affiliated Hospital, College of Medicine Zhejiang University Hangzhou China
| | - Fei Han
- Kidney Disease Center, The First Affiliated Hospital, College of Medicine Zhejiang University Hangzhou China
| | - JiangHua Chen
- Kidney Disease Center, The First Affiliated Hospital, College of Medicine Zhejiang University Hangzhou China
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COVID-19-Associated Pulmonary Mucormycosis. J Fungi (Basel) 2022; 8:jof8070711. [PMID: 35887466 PMCID: PMC9315775 DOI: 10.3390/jof8070711] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 06/30/2022] [Accepted: 07/01/2022] [Indexed: 12/21/2022] Open
Abstract
COVID-19-associated mucormycosis (CAM) emerged as an epidemic in certain parts of the world amidst the global COVID-19 pandemic. While rhino–orbital mucormycosis was well reported during the pandemic, in the absence of routine diagnostic facilities including lower airway sampling, pulmonary mucormycosis was probably under-recognized. In this review, we have focused on the epidemiology and management of COVID-19-associated pulmonary mucormycosis (CAPM). CAPM is a deadly disease and mortality can be as high as 80% in the absence of early clinical suspicion and treatment. While histopathological examination of tissue for angio-invasion and cultures have remained gold standard for diagnosis, there is an increasing interest in molecular and serological methods to facilitate diagnosis in critically ill patients and often, immune-suppressed hosts who cannot readily undergo invasive sampling. Combined medical and surgical treatment offers more promise than standalone medical therapy. Maintaining adequate glycemic control and prudent use of steroids which can be a double-edged sword in COVID-19 patients are the key preventative measures. We would like to emphasize the urgent need for the development and validation of reliable biomarkers and molecular diagnostics to facilitate early diagnosis.
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Katal S, Eibschutz LS, Radmard AR, Naderpour Z, Gupta A, Hejal R, Gholamrezanezhad A. Black Fungus and beyond: COVID-19 associated infections. Clin Imaging 2022; 90:97-109. [PMID: 36007282 PMCID: PMC9308173 DOI: 10.1016/j.clinimag.2022.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 07/11/2022] [Accepted: 07/15/2022] [Indexed: 12/15/2022]
Abstract
Globally, many hospitalized COVID-19 patients can experience an unexpected acute change in status, prompting rapid and expert clinical assessment. Superimposed infections can be a significant cause of clinical and radiologic deviations in this patient population, further worsening clinical outcome and muddling the differential diagnosis. As thrombotic, inflammatory, and medication-induced complications can also trigger an acute change in COVID-19 patient status, imaging early and often plays a vital role in distinguishing the cause of patient decline and monitoring patient outcome. While the common radiologic findings of COVID-19 infection are now widely reported, little is known about the clinical manifestations and imaging findings of superimposed infection. By discussing case studies of patients who developed bacterial, fungal, parasitic, and viral co-infections and identifying the most frequently reported imaging findings of superimposed infections, physicians will be more familiar with common infectious presentations and initiate a directed workup sooner. Ultimately, any abrupt changes in the expected COVID-19 imaging presentation, such as the presence of new consolidations or cavitation, should prompt further workup to exclude superimposed opportunistic infection.
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Affiliation(s)
- Sanaz Katal
- Department of Nuclear Medicine, Shiraz Kowsar Hospital, Tehran University of Medical Sciences
| | - Liesl S Eibschutz
- Department of Radiology, Keck School of Medicine, University of Southern California (USC), Los Angeles, CA, United States of America
| | - Amir Reza Radmard
- Department of Radiology, Shariati Hospital, Tehran University of Medical Sciences, Iran
| | - Zeinab Naderpour
- Department of Pulmonology, Shariati Hospital, Tehran University of Medical Sciences, Iran
| | - Amit Gupta
- Department of Radiology, University Hospital Cleveland Medical Center, Cleveland, OH, United States of America
| | - Rana Hejal
- Department of Internal Medicine, Division of Pulmonary Critical Care, University Hospital Cleveland Medical Center, Cleveland, OH, United States of America
| | - Ali Gholamrezanezhad
- Department of Radiology, Keck School of Medicine, University of Southern California (USC), Los Angeles, CA, United States of America.
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Clinical Manifestations of Pulmonary Mucormycosis in Recipients of Allogeneic Hematopoietic Stem Cell Transplantation: A 21-Case Series Report and Literature Review. Can Respir J 2022; 2022:1237125. [PMID: 35692949 PMCID: PMC9184213 DOI: 10.1155/2022/1237125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 05/09/2022] [Accepted: 05/13/2022] [Indexed: 11/17/2022] Open
Abstract
Introduction Mucormycosis is a rare, invasive disease caused by opportunistic pathogens related to the Mucorales order with high fatality rates in immunocompromised hosts, especially in recipients of allogeneic hematopoietic stem cell transplantation (allo-HSCT). Diagnosis and treatment of pulmonary mucormycosis in recipients of allo-HSCT remains challenging. Purpose The aim of this study is to summarize and analyze the clinical features of pulmonary mucormycosis in recipients of allo-HSCT to explore further clinical research directions for this rare fungal infection in the particular populations. Methods We retrospectively reviewed pulmonary mucormycosis in patients who received allo-HSCT in our hospital from January 2010 to December 2020. A total of 21 patients fulfilled the diagnostic criteria for pulmonary mucormycosis according to the European Organization for Research and Treatment of Cancer and Mycoses Study Group (EORTC/MSG) criteria. Demographic and clinical data, mycological and histopathological records, and treatment and prognosis data were collected. Clinical variables were compared between survivors and nonsurvivors. The survival days of patients with and without graft-versus-host disease (GVHD) and hemoptysis were compared separately. Results Most of the recipients of allo-HSCT were male patients with a mean age of 43 years. Acute myeloid leukemia (AML) was the most common primary hematologic malignancy. Extrapulmonary involvement accounted for 28.6%, of the cases, including central nervous system (n = 5) and skin and soft tissue (n = 1). The median time to infection was 96 days after allo-HSCT. Clinical presentations were nonspecific, including fever (76.2%) and cough (85.7%), as well as dyspnea (19.0%), chest pain (38.1%), and hemoptysis (61.9%). Ground-glass infiltrates (95.0%) and nodules/masses (80%) were the most common radiographic patterns on chest CT. The most common pathogen was Rhizopus (63.2%), and breakthrough infection accounted for 90.5%. Fifteen of the patients died within one year, and the median time from diagnosis to death was 47 days. Conclusion Mucormycosis is a fatal infection disease. Opportunistic infections in recipients of allo-HSCT are mainly breakthrough infections and may have a seasonal distribution (summer and autumn) and more cases of death in autumn. The marked reversed halo sign can be seen both in the initial stage of infection and after antifungal treatment. In our case series, patients with pulmonary mucormycosis with extrapulmonary involvement 100% died within one year. There are more patients with GVHD before infection and hemoptysis in nonsurvivors than survivors within 100 days. Patients with GVHD before infection and hemoptysis have a shorter survival time than those without.
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Sharma A, Goel A. Mucormycosis: risk factors, diagnosis, treatments, and challenges during COVID-19 pandemic. Folia Microbiol (Praha) 2022; 67:363-387. [PMID: 35220559 PMCID: PMC8881997 DOI: 10.1007/s12223-021-00934-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 11/15/2021] [Indexed: 12/29/2022]
Abstract
Mucormycosis is a deadly opportunistic disease caused by a group of fungus named mucormycetes. Fungal spores are normally present in the environment and the immune system of the body prevents them from causing disease in a healthy immunocompetent individual. But when the defense mechanism of the body is compromised such as in the patients of diabetes mellites, neustropenia, organ transplantation recipients, and other immune-compromised states, these fungal spores invade our defense mechanism easily causing a severe systemic infection with approximately 45-80% of case fatality. In the present scenario, during the COVID-19 pandemic, patients are on immunosuppressive drugs, glucocorticoids, thus are at high risk of mucormycosis. Patients with diabetes mellitus are further getting a high chance of infection. Usually, the spores gain entry through our respiratory tract affecting the lungs and paranasal sinuses. Besides, they can also enter through damage into the skin or through the gastrointestinal route. This review article presents the current statistics, the causes of this infection in the human body, and its diagnosis with available recent therapies through recent databases collected from several clinics and agencies. The diagnosis and identification of the infection were made possible through various latest medical techniques such as computed tomography scans, direct microscopic observations, MALDI-TOF mass spectrometry, serology, molecular assay, and histopathology. Mucormycosis is so uncommon, no randomized controlled treatment studies have been conducted. The newer triazoles, posaconazole (POSA) and isavuconazole (ISAV) (the active component of the prodrug isavuconazonium sulfate) may be beneficial in patients who are refractory to or intolerant of Liposomal Amphotericin B. but due to lack of early diagnosis and aggressive surgical debridement or excision, the mortality rate remains high. In the course of COVID-19 treatments, there must be more vigilance and alertness are required from clinicians to evaluate these invasive fungal infections.
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Affiliation(s)
- Ayushi Sharma
- Department of Biotechnology, Institute of Applied Sciences & Humanities, GLA University, 281 406, Mathura, UP, India
| | - Anjana Goel
- Department of Biotechnology, Institute of Applied Sciences & Humanities, GLA University, 281 406, Mathura, UP, India.
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28
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Invasive Fungal Pneumonia in Immunocompromised Patients. Radiol Clin North Am 2022; 60:497-506. [DOI: 10.1016/j.rcl.2022.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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29
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Cui Q, Dai H, Wu D, He J, Xu Y, Tang X, Xu J. Case Report: A Case of Acute T Lymphoblastic Leukemia With Mixed Infection of Lethal Invasive Mucormycosis and Multi-Drug Resistant Bacteria. Front Med (Lausanne) 2022; 9:854338. [PMID: 35479945 PMCID: PMC9037592 DOI: 10.3389/fmed.2022.854338] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 03/21/2022] [Indexed: 12/15/2022] Open
Abstract
Pulmonary mucormycosis (PM) is a rare and life-threatening fungal infection. Here, we report a case of an acute T lymphoblastic leukemia patient with mixed infections of lethal invasive Mucormycosis and multi-drug resistant (MDR) bacteria. After receiving anti-infection drugs to control the patient's fever, he was treated with induction chemotherapy. However, the malignant hematological disease was poorly controlled by the chemotherapy and the patient developed more symptoms of infection. Although the results of multiple β-D-Glucan (G) and Galactomannan (GM) tests remained negative, several pathogens were detected using metagenomic next-generation sequencing (mNGS). In particular, mNGS identified Malassezia pachydermum, Mucor racemosus, and Lauteria mirabilis in the peripheral blood and local secretion samples. The Mucor and bacterial infections were further confirmed via multi-site and repeated fungal and bacterial cultures, respectively. Despite adjusting the anti-infection therapy according to the diagnostic results, the patient's blood disease and symptoms of infection were not alleviated. Additionally, the MDR Acinetobacter baumannii infection/colonization was not confirmed until the seventh culture of the peripheral venous catheter tip. Due to the patient's deteriorating conditions, his family decided to withdraw him from further treatment. Overall, mNGS can facilitate a diagnosis of Mucormycosis by providing clinical and therapeutic information to support conventional diagnostic approaches. For the early and timely diagnosis and treatment of PM, it is also necessary to consider the malignant hematological conditions and repeated tests through multiple detection methods.
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Affiliation(s)
- Qingya Cui
- National Clinical Research Center for Hematologic Diseases, Hematology Department, Jiangsu Institute of Hematology, The First Hospital Affiliated to Soochow University, Suzhou, China
| | - Haiping Dai
- National Clinical Research Center for Hematologic Diseases, Hematology Department, Jiangsu Institute of Hematology, The First Hospital Affiliated to Soochow University, Suzhou, China
| | - Depei Wu
- National Clinical Research Center for Hematologic Diseases, Hematology Department, Jiangsu Institute of Hematology, The First Hospital Affiliated to Soochow University, Suzhou, China
| | - Jun He
- National Clinical Research Center for Hematologic Diseases, Hematology Department, Jiangsu Institute of Hematology, The First Hospital Affiliated to Soochow University, Suzhou, China
| | - Yang Xu
- Dinfectome Inc., Nanjing, China
| | - Xiaowen Tang
- National Clinical Research Center for Hematologic Diseases, Hematology Department, Jiangsu Institute of Hematology, The First Hospital Affiliated to Soochow University, Suzhou, China
| | - Jie Xu
- Center of Clinical Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
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Definition, diagnosis, and management of COVID-19-associated pulmonary mucormycosis: Delphi consensus statement from the Fungal Infection Study Forum and Academy of Pulmonary Sciences, India. THE LANCET INFECTIOUS DISEASES 2022; 22:e240-e253. [PMID: 35390293 PMCID: PMC8979562 DOI: 10.1016/s1473-3099(22)00124-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/03/2022] [Accepted: 02/03/2022] [Indexed: 12/16/2022]
Abstract
COVID-19-associated pulmonary mucormycosis (CAPM) remains an underdiagnosed entity. Using a modified Delphi method, we have formulated a consensus statement for the diagnosis and management of CAPM. We selected 26 experts from various disciplines who are involved in managing CAPM. Three rounds of the Delphi process were held to reach consensus (≥70% agreement or disagreement) or dissensus. A consensus was achieved for 84 of the 89 statements. Pulmonary mucormycosis occurring within 3 months of COVID-19 diagnosis was labelled CAPM and classified further as proven, probable, and possible. We recommend flexible bronchoscopy to enable early diagnosis. The experts proposed definitions to categorise dual infections with aspergillosis and mucormycosis in patients with COVID-19. We recommend liposomal amphotericin B (5 mg/kg per day) and early surgery as central to the management of mucormycosis in patients with COVID-19. We recommend response assessment at 4–6 weeks using clinical and imaging parameters. Posaconazole or isavuconazole was recommended as maintenance therapy following initial response, but no consensus was reached for the duration of treatment. In patients with stable or progressive disease, the experts recommended salvage therapy with posaconazole or isavuconazole. CAPM is a rare but under-reported complication of COVID-19. Although we have proposed recommendations for defining, diagnosing, and managing CAPM, more extensive research is required.
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31
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Olivo Freites C, Sy H, Miguez P, Salonia J. Uncommon pathogens in an immunocompetent host: respiratory isolation of Cunninghamella bertholletiae, Aspergillus niger, Staphylococcus pseudintermedius and adenovirus in a patient with necrotising pneumonia. BMJ Case Rep 2022; 15:e240484. [PMID: 34992060 PMCID: PMC8738981 DOI: 10.1136/bcr-2020-240484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/20/2021] [Indexed: 11/03/2022] Open
Abstract
We present the unusual case of a 60-year-old immunocompetent woman with chronic obstructive pulmonary disease who developed a necrotising pneumonia with isolation of Cunninghamella bertholletiae, Aspergillus niger, Staphylococcus pseudintermedius and adenovirus. The patient recovered with antimicrobial therapy and supportive care in the intensive care unit. The current literature on diagnosis and treatment of these pathogens is reviewed.
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Affiliation(s)
| | - Hendrik Sy
- Internal Medicine, Mount Sinai Health System, New York, New York, USA
| | - Patricia Miguez
- Internal Medicine, Mount Sinai Health System, New York, New York, USA
| | - James Salonia
- Pulmonary and Critical Care Medicine, Mount Sinai Health System, New York, New York, USA
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Dogra S, Arora A, Aggarwal A, Passi G, Sharma A, Singh G, Barnwal RP. Mucormycosis Amid COVID-19 Crisis: Pathogenesis, Diagnosis, and Novel Treatment Strategies to Combat the Spread. Front Microbiol 2022; 12:794176. [PMID: 35058909 PMCID: PMC8763841 DOI: 10.3389/fmicb.2021.794176] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 11/30/2021] [Indexed: 01/01/2023] Open
Abstract
The havoc unleashed by COVID-19 pandemic has paved way for secondary ominous fungal infections like Mucormycosis. It is caused by a class of opportunistic pathogens from the order Mucorales. Fatality rates due to this contagious infection are extremely high. Numerous clinical manifestations result in damage to multiple organs subject to the patient's underlying condition. Lack of a proper detection method and reliable treatment has made the management of this infection troublesome. Several reports studying the behavior pattern of Mucorales inside the host by modulation of its defense mechanisms have helped in understanding the pathogenesis of this angio-invasive infection. Many recent advances in diagnosis and treatment of this fungal infection have not been much beneficial. Therefore, there is a need to foster more viable strategies. This article summarizes current and imminent approaches that could aid effective management of these secondary infections in these times of global pandemic. It is foreseen that the development of newer antifungal drugs, antimicrobial peptides, and nanotechnology-based approaches for drug delivery would help combat this infection and curb its spread.
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Affiliation(s)
- Shreya Dogra
- Department of Biophysics, Panjab University, Chandigarh, India
| | - Akanksha Arora
- Department of Biophysics, Panjab University, Chandigarh, India
| | - Aashni Aggarwal
- Department of Biophysics, Panjab University, Chandigarh, India
| | - Gautam Passi
- Department of Biophysics, Panjab University, Chandigarh, India
| | - Akanksha Sharma
- Department of Biophysics, Panjab University, Chandigarh, India
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Gurpal Singh
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Ravi P. Barnwal
- Department of Biophysics, Panjab University, Chandigarh, India
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33
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Dental and Oral Manifestations of COVID-19 Related Mucormycosis: Diagnoses, Management Strategies and Outcomes. J Fungi (Basel) 2021; 8:jof8010044. [PMID: 35049983 PMCID: PMC8781413 DOI: 10.3390/jof8010044] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 12/28/2021] [Accepted: 12/29/2021] [Indexed: 12/14/2022] Open
Abstract
It has been nearly two years since the pandemic caused by the novel coronavirus disease (COVID-19) has affected the world. Several innovations and discoveries related to COVID-19 are surfacing every day and new problems associated with the COVID-19 virus are also coming to light. A similar situation is with the emergence of deep invasive fungal infections associated with severe acute respiratory syndrome 2 (SARS-CoV-2). Recent literature reported the cases of pulmonary and rhino-cerebral fungal infections appearing in patients previously infected by COVID-19. Histopathological analysis of these cases has shown that most of such infections are diagnosed as mucormycosis or aspergillosis. Rhino-orbital-cerebral mucormycosis usually affects the maxillary sinus with involvement of maxillary teeth, orbits, and ethmoidal sinuses. Diabetes mellitus is an independent risk factor for both COVID-19 as well as mucormycosis. At this point, there is scanty data on the subject and most of the published literature comprises of either case reports or case series with no long-term data available. The aim of this review paper is to present the characteristics of COVID-19 related mucormycosis and associated clinical features, outcome, diagnostic and management strategies. A prompt diagnosis and aggressive treatment planning can surely benefit these patients.
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34
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Chen L, Su Y, Xiong XZ. Rhizopus microsporus lung infection in an immunocompetent patient successfully treated with amphotericin B: A case report. World J Clin Cases 2021; 9:11108-11114. [PMID: 35047625 PMCID: PMC8678878 DOI: 10.12998/wjcc.v9.i35.11108] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/09/2021] [Accepted: 11/03/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Rhizopus microsporus (R. microsporus) lung infection is an invasive fungal disease with high mortality that is increasingly common in immunocompromised patients. However, it is very rare in immunocompetent patients. Here, we present the case of a 19-year-old girl who developed R. microsporus lung infection without any known immunodeficiency.
CASE SUMMARY The patient presented to our hospital because of hemoptysis and irritative cough without expectoration. She was first treated for community-acquired pneumonia until the detection of R. microsporus in bronchoalveolar lavage fluid by metagenomics next-generation sequencing (mNGS). After a combination therapy of intravenous inhalation and local airway perfusion of amphotericin B, she eventually recovered, with significant absorption of lung infections.
CONCLUSION Early diagnosis and treatment are very important for pulmonary mucormycosis. Compared to fungal culture, mNGS is a relatively precise and convenient method to obtain pathogenic results. A combination therapy of intravenous inhalation and local airway perfusion of amphotericin B may be a promising strategy for the treatment of pulmonary mucormycosis in the future.
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Affiliation(s)
- Long Chen
- Department of Respiratory and Critical Care Medicine, Union Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, China
| | - Yuan Su
- Department of Respiratory and Critical Care Medicine, Union Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, China
| | - Xian-Zhi Xiong
- Department of Respiratory and Critical Care Medicine, Union Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, China
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35
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Raghav A, Ali SG, Jeong GB, Gautam KA, Banday S, Mateen QN, Tripathi P, Giri R, Agarwal S, Singh M, Khan HM. Newer Horizon of Mesenchymal Stem Cell-Based Therapy in the Management of SARS-CoV-2-Associated Mucormycosis: A Safe Hope for Future Medicine. Front Microbiol 2021; 12:738983. [PMID: 34707590 PMCID: PMC8543035 DOI: 10.3389/fmicb.2021.738983] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 08/26/2021] [Indexed: 12/27/2022] Open
Abstract
SARS-CoV-2-infected patients are reported to show immunocompromised behavior that gives rise to a wide variety of complications due to impaired innate immune response, cytokine storm, and thrombo-inflammation. Prolonged use of steroids, diabetes mellitus, and diabetic ketoacidosis (DKA) are some of the factors responsible for the growth of Mucorales in such immunocompromised patients and, thus, can lead to a life-threatening condition referred to as mucormycosis. Therefore, an early diagnosis and cell-based management cosis is the need of the hour to help affected patients overcome this severe condition. In addition, extended exposure to antifungal drugs/therapeutics is found to initiate hormonal and neurological complications. More recently, mesenchymal stem cells (MSCs) have been used to exhibit immunomodulatory function and proven to be beneficial in a clinical cell-based regenerative approach. The immunomodulation ability of MSCs in mucormycosis patient boosts the immunity by the release of chemotactic proteins. MSC-based therapy in mucormycosis along with the combination of short-term antifungal drugs can be utilized as a prospective approach for mucormycosis treatment with promising outcomes. However, preclinical and in mucormyIn mucormycosis, the hyphae of clinical trials are needed to establish the precise mechanism of MSCs in mucormycosis treatment.
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Affiliation(s)
- Alok Raghav
- Multidiscplinary Research Unit, Department of Health Research, MoHFW, GSVM Medical College, Kanpur, India
| | - Syed Ghazanfar Ali
- Viral Research Diagnostic Laboratory, Department of Microbiology, Jawaharlal Nehru Medical College and Hospital, Aligarh Muslim University, Aligarh, India
| | - Goo-Bo Jeong
- Department of Anatomy and Cell Biology, College of Medicine, Gachon University, Getbeol-ro Yeonsu-gu, Incheon, Korea
| | - Kirti Amresh Gautam
- Multidiscplinary Research Unit, Department of Health Research, MoHFW, GSVM Medical College, Kanpur, India
| | - Shahid Banday
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Medical School, Worcester, MA, United States
| | - Qazi Noorul Mateen
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, India
| | | | - Richa Giri
- Department of Medicine, GSVM Medical College, Kanpur, India
| | | | - Manish Singh
- Department of Neurosciences, GSVM Medical College, Kanpur, India
| | - Haris M Khan
- Viral Research Diagnostic Laboratory, Department of Microbiology, Jawaharlal Nehru Medical College and Hospital, Aligarh Muslim University, Aligarh, India
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Ravindra CM, Rajaram M, Madhusmita M, ChToi P, Sneha L. Pulmonary Aspergillus and Mucor Co-Infection: A report of two cases. Sultan Qaboos Univ Med J 2021; 21:495-498. [PMID: 34522421 PMCID: PMC8407904 DOI: 10.18295/squmj.8.2021.126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/13/2020] [Accepted: 08/09/2020] [Indexed: 11/18/2022] Open
Abstract
Co-infections or consecutive infections of mucormycosis and aspergillosis are very rare. Additionally, distinguishing between these two infections is also difficult as both these conditions have similar clinical features. We report two similar cases from Tamilnadu, who presented to a tertiary care centre in Puducherry, India in 2017 (first case) and 2019 (second case). The first case was a 70-year-old, non-diabetic male patient who presented with haemoptysis with a prior history of pulmonary tuberculosis. Computed tomography bronchial angiography revealed an air-crescent sign and the histopathological examination showed a fungal ball (aspergillus and mucor) in the right upper lobe and foci of fungal infection in the middle lobe. The second case was a 65-year-old diabetic male patient who presented with blackish expectoration and haemoptysis. A high-resolution computed tomography scan showed a reverse-halo sign in the right upper lobe. The results of the bronchoscopy-guided biopsy were consistent with a diagnosis of mixed mucormycosis and aspergillosis with angioinvasion. Both patients responded to amphotericin B with surgical excision of the affected lobe in the first case. A high degree of clinical suspicion, early surgical intervention and antifungal therapy are essential in the treatment of this rare co-infection.
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Affiliation(s)
- Chari M Ravindra
- Jawaharlal Institute of Postgraduate Medical Education & Research
| | - Manju Rajaram
- Jawaharlal Institute of Postgraduate Medical Education & Research
| | - M Madhusmita
- Jawaharlal Institute of Postgraduate Medical Education & Research
| | - Pampa ChToi
- Jawaharlal Institute of Postgraduate Medical Education & Research
| | - L Sneha
- Jawaharlal Institute of Postgraduate Medical Education & Research
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Brackin AP, Hemmings SJ, Fisher MC, Rhodes J. Fungal Genomics in Respiratory Medicine: What, How and When? Mycopathologia 2021; 186:589-608. [PMID: 34490551 PMCID: PMC8421194 DOI: 10.1007/s11046-021-00573-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 06/14/2021] [Indexed: 12/20/2022]
Abstract
Respiratory infections caused by fungal pathogens present a growing global health concern and are a major cause of death in immunocompromised patients. Worryingly, coronavirus disease-19 (COVID-19) resulting in acute respiratory distress syndrome has been shown to predispose some patients to airborne fungal co-infections. These include secondary pulmonary aspergillosis and mucormycosis. Aspergillosis is most commonly caused by the fungal pathogen Aspergillus fumigatus and primarily treated using the triazole drug group, however in recent years, this fungus has been rapidly gaining resistance against these antifungals. This is of serious clinical concern as multi-azole resistant forms of aspergillosis have a higher risk of mortality when compared against azole-susceptible infections. With the increasing numbers of COVID-19 and other classes of immunocompromised patients, early diagnosis of fungal infections is critical to ensuring patient survival. However, time-limited diagnosis is difficult to achieve with current culture-based methods. Advances within fungal genomics have enabled molecular diagnostic methods to become a fast, reproducible, and cost-effective alternative for diagnosis of respiratory fungal pathogens and detection of antifungal resistance. Here, we describe what techniques are currently available within molecular diagnostics, how they work and when they have been used.
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Affiliation(s)
- Amelie P Brackin
- MRC Centre for Global Disease Analysis, Imperial College London, London, UK
| | - Sam J Hemmings
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK
| | - Matthew C Fisher
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK
| | - Johanna Rhodes
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK.
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38
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Huang H, Xie L, Zheng Z, Yu H, Tu L, Cui C, Yu J. Mucormycosis-induced upper gastrointestinal ulcer perforation in immunocompetent patients: a report of two cases. BMC Gastroenterol 2021; 21:311. [PMID: 34404350 PMCID: PMC8370051 DOI: 10.1186/s12876-021-01881-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 07/10/2021] [Indexed: 01/17/2023] Open
Abstract
Background Gastrointestinal mucormycosis (GIM) is a rare, opportunistic fungal infection with poor prognosis. Clinically, it is difficult to diagnose GIM owing to its nonspecific clinical symptoms and poor suspicion. The estimated incidence of GIM is inaccurate, and most cases are diagnosed accidentally during surgery or upon postmortem examination. GIM usually occurs in patients with immune deficiencies or diabetes. Here, we report two cases of immunocompetent young patients with GIM who had good prognosis after treatment. Compared to other case reports on GIM, our cases had unusual infection sites and no obvious predisposing factors, which make it important to highlight these cases. Case presentation The first case was that of a 16-year-old immunocompetent boy who was admitted with gastrointestinal bleeding and perforation due to a gastric ulcer. Strategies used to arrest bleeding during emergency gastroscopy were unsuccessful. An adhesive mass was then discovered through laparoscopy. The patient underwent type II gastric resection. Pathological examination of the mass revealed bacterial infection and GIM. The second case was of a 33-year-old immunocompetent woman with a recent history of a lower leg sprain. The patient subsequently became critically ill and required ventilatory support. After hemodynamic stabilization and extubation, she presented with hematemesis due to exfoliation and necrosis of the stomach wall. The patient underwent total gastrectomy plus jejunostomy. The pathology results revealed severe bacterial infection and fungal infection that was confirmed as GIM. The patient fully recovered after receiving anti-infective and antifungal treatments. Conclusions Neither patient was immunosuppressed, and both patients presented with gastrointestinal bleeding. GIM was confirmed via pathological examination. GIM is not limited to immunocompromised patients, and its diagnosis mainly relies on pathological examination. Early diagnosis, timely surgical treatment, and early administration of systemic drug treatment are fundamental to improving its prognosis. Supplementary Information The online version contains supplementary material available at 10.1186/s12876-021-01881-8.
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Affiliation(s)
- Hongyun Huang
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Lang Xie
- Department of General Surgery of Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Zheng Zheng
- Department of General Surgery of Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Hanhui Yu
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Lingjing Tu
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Chunhui Cui
- Department of General Surgery of Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Jinlong Yu
- Department of General Surgery of Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China.
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39
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The Reverse Halo Sign in an Immunocompromised Host. J Gen Intern Med 2021; 36:2452-2453. [PMID: 33904050 PMCID: PMC8342741 DOI: 10.1007/s11606-021-06795-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 04/01/2021] [Indexed: 10/21/2022]
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40
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Foppiano Palacios C, Spichler Moffarah A. Diagnosis of Pneumonia Due to Invasive Molds. Diagnostics (Basel) 2021; 11:diagnostics11071226. [PMID: 34359309 PMCID: PMC8304515 DOI: 10.3390/diagnostics11071226] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 12/20/2022] Open
Abstract
Pneumonia is the most common presentation of invasive mold infections (IMIs), and is pathogenetically characterized as angioinvasion by hyphae, resulting in tissue infarction and necrosis. Aspergillus species are the typical etiologic cause of mold pneumonia, with A. fumigatus in most cases, followed by the Mucorales species. Typical populations at risk include hematologic cancer patients on chemotherapy, bone marrow and solid organ transplant patients, and patients on immunosuppressive medications. Invasive lung disease due to molds is challenging to definitively diagnose based on clinical features and imaging findings alone, as these methods are nonspecific. Etiologic laboratory testing is limited to insensitive culture techniques, non-specific and not readily available PCR, and tissue biopsies, which are often difficult to obtain and impact on the clinical fragility of patients. Microbiologic/mycologic analysis has limited sensitivity and may not be sufficiently timely to be actionable. Due to the inadequacy of current diagnostics, clinicians should consider a combination of diagnostic modalities to prevent morbidity in patients with mold pneumonia. Diagnosis of IMIs requires improvement, and the availability of noninvasive methods such as fungal biomarkers, microbial cell-free DNA sequencing, and metabolomics-breath testing could represent a new era of timely diagnosis and early treatment of mold pneumonia.
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41
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Abstract
Mucormycosis is a rare but aggressive fungal disease that mainly affects patients with poorly controlled diabetes mellitus and those who are severely immunocompromised, including patients with hematological malignancies and solid organ transplant recipients. Early recognition of infection is critical for treatment success, followed by prompt initiation of antifungal therapy with lipid formulation amphotericin B. Posaconazole and isavuconazole should be used for stepdown and salvage therapy. Surgical debridement is key for tissue diagnosis and treatment and should be pursued urgently whenever possible. In addition to surgery and antifungal therapy, reverting the underlying risk factor for infection is important for treatment response.
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Affiliation(s)
- Julie M Steinbrink
- Division of Infectious Diseases, Department of Internal Medicine, Duke University Medical Center, Hanes House, Duke University Medical Center, 315 Trent Drive, Durham, NC 27710, USA
| | - Marisa H Miceli
- Division of Infectious Diseases, Department of Internal Medicine, University of Michigan Health System, F4005 UH-South- SPC 5226, 1500 E. Medical Center Drive, Ann Arbor, MI 48109, USA.
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42
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Shibata W, Niki M, Sato K, Fujimoto H, Yamada K, Watanabe T, Miyazaki Y, Asai K, Obata Y, Tachibana T, Kawaguchi T, Kaneko Y, Kakeya H. Detection of Rhizopus-specific antigen in human and murine serum and bronchoalveolar lavage. Med Mycol 2021; 58:958-964. [PMID: 32060526 DOI: 10.1093/mmy/myaa001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/13/2019] [Accepted: 01/05/2020] [Indexed: 01/18/2023] Open
Abstract
Mucormycosis is a deep-seated fungal infection that mainly develops in patients with severe immunodeficiencies such as those with malignant hematological diseases. Despite poor prognosis, there is no reliable and minimally invasive diagnostic method-such as serodiagnosis-for making a clinical decision regarding the condition. As early diagnosis and early treatment improve the prognosis of mucormycosis, the development of a sensitive early diagnostic method is important. We had previously identified a Rhizopus-specific antigen (RSA) by signal sequence trapping and retrovirus-mediated expression (SST-REX), and evaluated its utility as a diagnostic antigen by constructing a sandwich enzyme-linked immunosorbent assay (ELISA) system to detect serum RSA levels in inoculated mice. In this study, we used the RSA-specific rabbit monoclonal antibodies generated by novel hybridoma technology to improve the sensitivity of the ELISA system. We observed an increase in serum and bronchoalveolar lavage fluid (BALF) levels of RSA in mouse model 1 day after inoculation, suggesting that this newly developed monoclonal antibody-based ELISA system may be useful for the diagnosis of mucormycosis in the early stages of infection. In addition, we measured RSA levels in human serum and BALF, and found that serum RSA level was higher in mucormycosis patients (15.1 ng/ml) than that in invasive pulmonary aspergillosis patients (0.53 ng/ml) and the negative control (0.49 ng/ml). Our results suggest that RSA may be a powerful tool for the diagnosis of pulmonary mucormycosis, and its differentiation from other deep-seated mycoses such as aspergillosis.
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Affiliation(s)
- Wataru Shibata
- Department of Infection Control Science, Osaka City University Graduate School of Medicine, Osaka, Japan.,Department of Respiratory Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan.,Research Center for Infectious Disease Sciences
| | - Mamiko Niki
- Department of Bacteriology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Kanako Sato
- Department of Respiratory Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Hiroki Fujimoto
- Department of Infection Control Science, Osaka City University Graduate School of Medicine, Osaka, Japan.,Research Center for Infectious Disease Sciences
| | - Koichi Yamada
- Department of Infection Control Science, Osaka City University Graduate School of Medicine, Osaka, Japan.,Research Center for Infectious Disease Sciences
| | - Tetsuya Watanabe
- Department of Respiratory Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yoshitsugu Miyazaki
- Department of Chemotherapy and Mycoses, National Institute of Infectious Diseases, Tokyo, Japan
| | - Kazuhisa Asai
- Department of Respiratory Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yoko Obata
- Department of Nephrology, Nagasaki University Hospital, Nagasaki, Japan
| | | | - Tomoya Kawaguchi
- Department of Respiratory Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yukihiro Kaneko
- Department of Bacteriology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Hiroshi Kakeya
- Department of Infection Control Science, Osaka City University Graduate School of Medicine, Osaka, Japan.,Research Center for Infectious Disease Sciences
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43
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Alexander BD, Lamoth F, Heussel CP, Prokop CS, Desai SR, Morrissey CO, Baddley JW. Guidance on Imaging for Invasive Pulmonary Aspergillosis and Mucormycosis: From the Imaging Working Group for the Revision and Update of the Consensus Definitions of Fungal Disease from the EORTC/MSGERC. Clin Infect Dis 2021; 72:S79-S88. [PMID: 33709131 DOI: 10.1093/cid/ciaa1855] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Clinical imaging in suspected invasive fungal disease (IFD) has a significant role in early detection of disease and helps direct further testing and treatment. Revised definitions of IFD from the EORTC/MSGERC were recently published and provide clarity on the role of imaging for the definition of IFD. Here, we provide evidence to support these revised diagnostic guidelines. METHODS We reviewed data on imaging modalities and techniques used to characterize IFDs. RESULTS Volumetric high-resolution computed tomography (CT) is the method of choice for lung imaging. Although no CT radiologic pattern is pathognomonic of IFD, the halo sign, in the appropriate clinical setting, is highly suggestive of invasive pulmonary aspergillosis (IPA) and associated with specific stages of the disease. The ACS is not specific for IFD and occurs in the later stages of infection. By contrast, the reversed halo sign and the hypodense sign are typical of pulmonary mucormycosis but occur less frequently. In noncancer populations, both invasive pulmonary aspergillosis and mucormycosis are associated with "atypical" nonnodular presentations, including consolidation and ground-glass opacities. CONCLUSIONS A uniform definition of IFD could improve the quality of clinical studies and aid in differentiating IFD from other pathology in clinical practice. Radiologic assessment of the lung is an important component of the diagnostic work-up and management of IFD. Periodic review of imaging studies that characterize findings in patients with IFD will inform future diagnostic guidelines.
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Affiliation(s)
- Barbara D Alexander
- Department of Medicine, Division of Infectious Diseases, Duke University, Durham, North Carolina, USA
| | - Frédéric Lamoth
- Service of Infectious Diseases, Department of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.,Institute of Microbiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Claus Peter Heussel
- Department of Diagnostic and Interventional Radiology with Nuclear Medicine, Thoraxklinik gGmbH, Heidelberg, Germany.,Translational Lung Research Centre Heidelberg, Member of the German Centre for Lung Research.,Diagnostic and Interventional Radiology, Ruprecht-Karls-University, Heidelberg, Germany
| | | | - Sujal R Desai
- Department of Radiology, Royal Brompton and Harefield National Health Service Foundation Trust, London and National Heart and Lung Institute, Imperial College, London, United Kingdom
| | - C Orla Morrissey
- Department of Infectious Diseases, Alfred Health and Monash University, Melbourne, Australia
| | - John W Baddley
- Division of Infectious Diseases, University of Maryland School of Medicine, Baltimore, Maryland, USA
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44
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Johnson MD, Lewis RE, Dodds Ashley ES, Ostrosky-Zeichner L, Zaoutis T, Thompson GR, Andes DR, Walsh TJ, Pappas PG, Cornely OA, Perfect JR, Kontoyiannis DP. Core Recommendations for Antifungal Stewardship: A Statement of the Mycoses Study Group Education and Research Consortium. J Infect Dis 2021; 222:S175-S198. [PMID: 32756879 DOI: 10.1093/infdis/jiaa394] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
In recent years, the global public health community has increasingly recognized the importance of antimicrobial stewardship (AMS) in the fight to improve outcomes, decrease costs, and curb increases in antimicrobial resistance around the world. However, the subject of antifungal stewardship (AFS) has received less attention. While the principles of AMS guidelines likely apply to stewarding of antifungal agents, there are additional considerations unique to AFS and the complex field of fungal infections that require specific recommendations. In this article, we review the literature on AMS best practices and discuss AFS through the lens of the global core elements of AMS. We offer recommendations for best practices in AFS based on a synthesis of this evidence by an interdisciplinary expert panel of members of the Mycoses Study Group Education and Research Consortium. We also discuss research directions in this rapidly evolving field. AFS is an emerging and important component of AMS, yet requires special considerations in certain areas such as expertise, education, interventions to optimize utilization, therapeutic drug monitoring, and data analysis and reporting.
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Affiliation(s)
- Melissa D Johnson
- Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, North Carolina, USA
| | - Russell E Lewis
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Elizabeth S Dodds Ashley
- Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, North Carolina, USA
| | - Luis Ostrosky-Zeichner
- Division of Infectious Diseases, Laboratory of Mycology Research, McGovern Medical School, Houston, Texas, USA
| | - Theoklis Zaoutis
- Division of Infectious Diseases, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - George R Thompson
- Division of Infectious Diseases, Department of Internal Medicine, University of California, Davis, Sacramento, California, USA
| | - David R Andes
- Department of Medicine and Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Thomas J Walsh
- Transplantation-Oncology Infectious Diseases, Weill Cornell Medicine of Cornell University, New York, New York, USA
| | - Peter G Pappas
- Division of Infectious Diseases, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Oliver A Cornely
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany.,German Centre for Infection Research, partner site Bonn-Cologne, Cologne, Germany.,CECAD Cluster of Excellence, University of Cologne, Cologne, Germany.,Clinical Trials Center Cologne, University Hospital of Cologne, Cologne, Germany
| | - John R Perfect
- Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, North Carolina, USA
| | - Dimitrios P Kontoyiannis
- Department of Infectious Diseases, Infection Control and Employee Health, MD Anderson Cancer Center, Houston, Texas, USA
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45
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Muthu V, Gandra RR, Dhooria S, Sehgal IS, Prasad KT, Kaur H, Gupta N, Bal A, Ram B, Aggarwal AN, Chakrabarti A, Agarwal R. Role of flexible bronchoscopy in the diagnosis of invasive fungal infections. Mycoses 2021; 64:668-677. [PMID: 33719109 DOI: 10.1111/myc.13263] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 02/23/2021] [Accepted: 02/25/2021] [Indexed: 01/30/2023]
Abstract
BACKGROUND There are sparse data on the role of flexible bronchoscopy (FB) in diagnosing invasive mould infections (IMIs). OBJECTIVE To investigate the safety and usefulness of FB in IMI. We evaluate the factors associated with a successful diagnosis of IMI using FB. Further, we compare subjects of invasive pulmonary aspergillosis (IPA) with pulmonary mucormycosis (PM). METHODS We retrospectively reviewed the clinical features, imaging data, bronchoscopy, microbiology and pathology details of subjects who underwent FB for suspected IMI. We categorised FB as diagnostic if it contributed to the diagnosis of IMI. We performed a multivariate analysis to identify the factors associated with a diagnostic bronchoscopy. RESULTS Of the 3521 FB performed over 18 months, 132 (3.7%) were done for suspected IMIs. We included 107 subjects for the final analysis. The risk factors for IMI included renal transplantation (29.0%), diabetes (27.1%), haematological malignancy (10.3%) and others. We found bronchoscopic abnormalities in 33 (30.8%) subjects, and these were more frequent in those with confirmed PM (67%) than IPA (27%). IMI was confirmed in 79 (14 proven, 48 probable and 17 possible) subjects. FB was diagnostic in 71%. We experienced major complications in three cases (2.7%), including one death. On multivariate analysis, the visualisation of endobronchial abnormalities during FB (OR [95%, CI], 8.5 [1.4-50.4]) was the only factor associated with a diagnostic FB after adjusting for age and various risk factors. CONCLUSIONS Flexible bronchoscopy is a useful and safe procedure in diagnosing IMIs. The presence of endobronchial abnormalities predicts a successful diagnostic yield on FB.
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Affiliation(s)
- Valliappan Muthu
- Department of Pulmonary Medicine, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Raghava Rao Gandra
- Department of Pulmonary Medicine, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Sahajal Dhooria
- Department of Pulmonary Medicine, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Inderpaul Singh Sehgal
- Department of Pulmonary Medicine, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Kuruswamy Thurai Prasad
- Department of Pulmonary Medicine, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Harsimran Kaur
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Nalini Gupta
- Department of Cytology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Amanjit Bal
- Department of Histopathology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Babu Ram
- Department of Pulmonary Medicine, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Ashutosh N Aggarwal
- Department of Pulmonary Medicine, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Arunaloke Chakrabarti
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Ritesh Agarwal
- Department of Pulmonary Medicine, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
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46
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Jain A, Knoll B, Lim S, Kleinman G, Epelbaum O. For Whom the Atoll Tolls: Targeting the Reversed Halo Sign. Am J Med 2021; 134:e150-e152. [PMID: 33353726 DOI: 10.1016/j.amjmed.2020.09.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 09/12/2020] [Accepted: 09/14/2020] [Indexed: 01/15/2023]
Affiliation(s)
| | | | | | | | - Oleg Epelbaum
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Westchester Medical Center, Valhalla, NY
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47
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Gonzalez ML, Chen S, Mazaheri P, Schneider J, Chernock R. Acute Invasive Fungal Sinusitis: A 30-Year Review of Pathology Practice and Possible Utility of the DiffQuik® Stain. Head Neck Pathol 2021; 15:852-858. [PMID: 33544380 PMCID: PMC8385081 DOI: 10.1007/s12105-021-01295-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 01/15/2021] [Indexed: 11/29/2022]
Abstract
Acute invasive fungal rhinosinusitis (AIFRS) is a fulminant disease with a high mortality rate. Here, we review the clinical and pathologic features of AIFRS over a 30-year period at a tertiary-care academic center focusing on diagnostic practice, especially the use of intra-operative consultation (IOC). A 1-year trial of intraoperative staining with DiffQuik® (DQ) was also assessed. There were 202 cases from 104 patients with AIFRS. The incidence of AIFRS increased over time (6.8 per year in the past decade versus 1.9 before 2009) as did the number of IOCs per case (2.4 per case in the past decade versus 0.6 before 2009). Disagreement between final diagnosis and IOC was seen in 8.3 % of patients, and the block-by-block error rate was 14.9 %. Fusarium was the most common fungus identified. An attempt to categorize the fungal organism based on histopathology was performed in 85.6 % of patients, with 91 % agreement with microbial cultures or PCR. Fungal hyphae were subjectively easier to identify on DQ stained cryostat sections compared to on routine hematoxylin and eosin stained sections and hyphae were identified in all 5 blocks in which organisms were present. The increasing incidence of AIFRS and expanding use of IOC indicate a need to improve and standardize the diagnostic protocol. The use of DQ as visual aid in IOC for AIFRS may be useful.
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Affiliation(s)
- Manuel Lora Gonzalez
- Department of Pathology & Immunology, Washington University School of Medicine-Barnes Jewish Hospital, St. Louis, MO USA ,Present Address: Department of Pathology, University of Alabama at Birmingham, Birmingham, AL USA
| | - Stephanie Chen
- Department of Otolaryngology, Washington University School of Medicine-Barnes Jewish Hospital, St. Louis, MO USA
| | - Parisa Mazaheri
- Department of Radiology, Washington University School of Medicine-Barnes Jewish Hospital, St. Louis, MO USA
| | - John Schneider
- Department of Otolaryngology, Washington University School of Medicine-Barnes Jewish Hospital, St. Louis, MO USA
| | - Rebecca Chernock
- Department of Pathology & Immunology, Washington University School of Medicine-Barnes Jewish Hospital, St. Louis, MO USA
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48
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Abstract
Mucormycosis is one of the most complicated to diagnose and treat invasive fungal diseases. Diagnostic techniques have not significantly advanced in years, and recent international consensus treatment guidelines offer some insight into the current best approaches to treating this deadly invasive mold.
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Affiliation(s)
- William J Steinbach
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Duke University Medical Center, Durham, North Carolina, USA.,Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, North Carolina, USA.,Duke Pediatric Immunocompromised Host Program, Durham, North Carolina, USA.,International Pediatric Fungal Network, Duke University Medical Center, Durham, North Carolina, USA
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49
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Skiada A, Pavleas I, Drogari-Apiranthitou M. Epidemiology and Diagnosis of Mucormycosis: An Update. J Fungi (Basel) 2020; 6:jof6040265. [PMID: 33147877 PMCID: PMC7711598 DOI: 10.3390/jof6040265] [Citation(s) in RCA: 264] [Impact Index Per Article: 66.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 10/30/2020] [Accepted: 11/01/2020] [Indexed: 12/17/2022] Open
Abstract
Mucormycosis is an angioinvasive fungal infection, due to fungi of the order Mucorales. Its incidence cannot be measured exactly, since there are few population-based studies, but multiple studies have shown that it is increasing. The prevalence of mucormycosis in India is about 80 times the prevalence in developed countries, being approximately 0.14 cases per 1000 population. Diabetes mellitus is the main underlying disease globally, especially in low and middle-income countries. In developed countries the most common underlying diseases are hematological malignancies and transplantation. Τhe epidemiology of mucormycosis is evolving as new immunomodulating agents are used in the treatment of cancer and autoimmune diseases, and as the modern diagnostic tools lead to the identification of previously uncommon genera/species such as Apophysomyces or Saksenaea complex. In addition, new risk factors are reported from Asia, including post-pulmonary tuberculosis and chronic kidney disease. New emerging species include Rhizopus homothallicus, Thamnostylum lucknowense, Mucor irregularis and Saksenaea erythrospora. Diagnosis of mucormycosis remains challenging. Clinical approach to diagnosis has a low sensitivity and specificity, it helps however in raising suspicion and prompting the initiation of laboratory testing. Histopathology, direct examination and culture remain essential tools, although the molecular methods are improving. The internal transcribed spacer (ITS) region is the most widely sequenced DNA region for fungi and it is recommended as a first-line method for species identification of Mucorales. New molecular platforms are being investigated and new fungal genetic targets are being explored. Molecular-based methods have gained acceptance for confirmation of the infection when applied on tissues. Methods on the detection of Mucorales DNA in blood have shown promising results for earlier and rapid diagnosis and could be used as screening tests in high-risk patients, but have to be validated in clinical studies. More, much needed, rapid methods that do not require invasive procedures, such as serology-based point-of-care, or metabolomics-based breath tests, are being developed and hopefully will be evaluated in the near future.
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Affiliation(s)
- Anna Skiada
- First Department of Medicine, Laiko Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Correspondence: ; Tel.: +30-2107-462-607
| | | | - Maria Drogari-Apiranthitou
- Fourth Department of Internal Medicine, General University Hospital “Attikon”, National and Kapodistrian University of Athens, 12462 Athens, Greece;
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50
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Shariati A, Moradabadi A, Chegini Z, Khoshbayan A, Didehdar M. An Overview of the Management of the Most Important Invasive Fungal Infections in Patients with Blood Malignancies. Infect Drug Resist 2020; 13:2329-2354. [PMID: 32765009 PMCID: PMC7369308 DOI: 10.2147/idr.s254478] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 06/26/2020] [Indexed: 12/12/2022] Open
Abstract
In patients with hematologic malignancies due to immune system disorders, especially persistent febrile neutropenia, invasive fungal infections (IFI) occur with high mortality. Aspergillosis, candidiasis, fusariosis, mucormycosis, cryptococcosis and trichosporonosis are the most important infections reported in patients with hematologic malignancies that undergo hematopoietic stem cell transplantation. These infections are caused by opportunistic fungal pathogens that do not cause severe issues in healthy individuals, but in patients with hematologic malignancies lead to disseminated infection with different clinical manifestations. Prophylaxis and creating a safe environment with proper filters and air pressure for patients to avoid contact with the pathogens in the surrounding environment can prevent IFI. Furthermore, due to the absence of specific symptoms in IFI, rapid and accurate diagnosis reduces the mortality rate of these infections and using molecular techniques along with standard mycological methods will improve the diagnosis of disseminated fungal infection in patients with hematologic disorders. Amphotericin B products, extended-spectrum azoles, and echinocandins are the essential drugs to control invasive fungal infections in patients with hematologic malignancies, and according to various conditions of patients, different results of treatment with these drugs have been reported in different studies. On the other hand, drug resistance in recent years has led to therapeutic failures and deaths in patients with blood malignancies, which indicates the need for antifungal susceptibility tests to use appropriate therapies. Life-threatening fungal infections have become more prevalent in patients with hematologic malignancies in recent years due to the emergence of new risk factors, new species, and increased drug resistance. Therefore, in this review, we discuss the different dimensions of the most critical invasive fungal infections in patients with hematologic malignancies and present a list of these infections with different clinical manifestations, treatment, and outcomes.
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Affiliation(s)
- Aref Shariati
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Alireza Moradabadi
- Department of Medical Parasitology and Mycology, Arak University of Medical Sciences, Arak, Iran
| | - Zahra Chegini
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Amin Khoshbayan
- Student Research Committee, Iran University of Medical Sciences, Tehran, Iran
| | - Mojtaba Didehdar
- Department of Medical Parasitology and Mycology, Arak University of Medical Sciences, Arak, Iran
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