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Kumar S, Narayanasamy S, Nepal P, Kumar D, Wankhar B, Batchala P, Kaur N, Buddha S, Jose J, Ojili V. Imaging of pulmonary infections encountered in the emergency department in post-COVID 19 era- common, rare and exotic. Bacterial and viral. Emerg Radiol 2024:10.1007/s10140-024-02248-8. [PMID: 38834862 DOI: 10.1007/s10140-024-02248-8] [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: 04/26/2024] [Accepted: 05/23/2024] [Indexed: 06/06/2024]
Abstract
Pulmonary infections contribute substantially to emergency department (ED) visits, posing a considerable health burden. Lower respiratory tract infections are prevalent, particularly among the elderly, constituting a significant percentage of infectious disease-related ED visits. Timely recognition and treatment are crucial to mitigate morbidity and mortality. Imaging studies, primarily chest radiographs and less frequently CT chests, play a pivotal role in diagnosis. This article aims to elucidate the imaging patterns of both common and rare pulmonary infections (bacterial and viral) in the post COVID-19 era, emphasizing the importance of recognizing distinct radiological manifestations. The integration of clinical and microbiological evidence aids in achieving accurate diagnoses, and guiding optimal therapeutic interventions. Despite potential overlapping manifestations, a nuanced understanding of radiological patterns, coupled with comprehensive clinical and microbiological information, enhances diagnostic precision in majority cases.
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Affiliation(s)
- Shruti Kumar
- Department of Radiology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | | | - Pankaj Nepal
- Department of Radiology, Inova Fairfax Hospital, Fairfax, VA, USA
| | - Devendra Kumar
- Department of Clinical imaging, Hamad Medical Corporation, Doha, Qatar
| | - Baphiralyne Wankhar
- Department of Radiology and Medical Imaging, UVA Health, Charlottesville, VA, USA
| | - Prem Batchala
- Department of Radiology and Medical Imaging, UVA Health, Charlottesville, VA, USA
| | - Neeraj Kaur
- Department of Radiology, Scarborough Health Network, Toronto, Canada
| | - Suryakala Buddha
- Department of Radiology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Joe Jose
- Department of Radiology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Vijayanadh Ojili
- Department of Radiology, University of Texas Health, San Antonio, TX, USA.
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Chen F, Li J, Li L, Tong L, Wang G, Zou X. Multidimensional biological characteristics of ground glass nodules. Front Oncol 2024; 14:1380527. [PMID: 38841161 PMCID: PMC11150621 DOI: 10.3389/fonc.2024.1380527] [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] [Received: 02/01/2024] [Accepted: 05/07/2024] [Indexed: 06/07/2024] Open
Abstract
The detection rate of ground glass nodules (GGNs) has increased in recent years because of their malignant potential but relatively indolent biological behavior; thus, correct GGN recognition and management has become a research focus. Many scholars have explored the underlying mechanism of the indolent progression of GGNs from several perspectives, such as pathological type, genomic mutational characteristics, and immune microenvironment. GGNs have different major mutated genes at different stages of development; EGFR mutation is the most common mutation in GGNs, and p53 mutation is the most abundant mutation in the invasive stage of GGNs. Pure GGNs have fewer genomic alterations and a simpler genomic profile and exhibit a gradually evolving genomic mutation profile as the pathology progresses. Compared to advanced lung adenocarcinoma, GGN lung adenocarcinoma has a higher immune cell percentage, is under immune surveillance, and has less immune escape. However, as the pathological progression and solid component increase, negative immune regulation and immune escape increase gradually, and a suppressive immune environment is established gradually. Currently, regular computer tomography monitoring and surgery are the main treatment strategies for persistent GGNs. Stereotactic body radiotherapy and radiofrequency ablation are two local therapeutic alternatives, and systemic therapy has been progressively studied for lung cancer with GGNs. In the present review, we discuss the characterization of the multidimensional molecular evolution of GGNs that could facilitate more precise differentiation of such highly heterogeneous lesions, laying a foundation for the development of more effective individualized treatment plans.
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Affiliation(s)
- Furong Chen
- Department of Oncology, The First People’s Hospital of Shuangliu District/West China (Airport) Hospital, Sichuan University, Chengdu, China
| | - Jiangtao Li
- Department of Oncology, The First People’s Hospital of Shuangliu District/West China (Airport) Hospital, Sichuan University, Chengdu, China
| | - Lei Li
- Department of Respiratory and Critical Care Medicine, Clinical Research Center for Respiratory Disease, West China Hospital, Sichuan University, Chengdu, China
- Department of State Key Laboratory of Respiratory Health and Multimobidity, West China Hospital, Sichuan University, Chengdu, China
| | - Lunbing Tong
- Department of Respiratory Medicine, Chengdu Seventh People’s Hospital/Affiliated Cancer Hospital of Chengdu Medical College, Chengdu, China
| | - Gang Wang
- Department of Respiratory and Critical Care Medicine, Clinical Research Center for Respiratory Disease, West China Hospital, Sichuan University, Chengdu, China
- Department of State Key Laboratory of Respiratory Health and Multimobidity, West China Hospital, Sichuan University, Chengdu, China
| | - Xuelin Zou
- Department of Respiratory Medicine, Chengdu Seventh People’s Hospital/Affiliated Cancer Hospital of Chengdu Medical College, Chengdu, China
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Pochepnia S, Grabczak EM, Johnson E, Eyuboglu FO, Akkerman O, Prosch H. Imaging in pulmonary infections of immunocompetent adult patients. Breathe (Sheff) 2024; 20:230186. [PMID: 38595938 PMCID: PMC11003523 DOI: 10.1183/20734735.0186-2023] [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: 11/06/2023] [Accepted: 02/06/2024] [Indexed: 04/11/2024] Open
Abstract
Pneumonia is a clinical syndrome characterised by fever, cough and alveolar infiltration of purulent fluid, caused by infection with a microbial pathogen. It can be caused by infections with bacteria, viruses or fungi, but a causative organism is identified in less than half of cases. The most common type of pneumonia is community-acquired pneumonia, which is caused by infections acquired outside the hospital. Current guidelines for pneumonia diagnosis require imaging to confirm the clinical suspicion of pneumonia. Thus, imaging plays an important role in both the diagnosis and management of pneumonia, with each modality having specific advantages and limitations. Chest radiographs are commonly used but have limitations in terms of sensitivity and specificity. Lung ultrasound shows high sensitivity and specificity. Computed tomography scans offer higher diagnostic accuracy but involve higher radiation doses. Radiological patterns, including lobar, lobular and interstitial pneumonia, provide valuable insights into causative pathogens and treatment decisions. Understanding these radiological patterns is crucial for accurate diagnosis. In this review, we will summarise the most important aspects pertaining to the role of imaging in pneumonia and will highlight the imaging characteristics of the most common causative organisms.
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Affiliation(s)
- Svitlana Pochepnia
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Elzbieta Magdalena Grabczak
- Department of Internal Medicine, Pulmonary Diseases and Allergy, Medical University of Warsaw, Warsaw, Poland
| | - Emma Johnson
- Clinical and Molecular Medicine, University of Dundee, Dundee, UK
| | - Fusun Oner Eyuboglu
- Baskent University School of Medicine, Pulmonary Diseases Department, Baskeny University Hospital, Ankara, Turkey
| | - Onno Akkerman
- University of Groningen, University Medical Center Groningen, Department of Pulmonary Diseases and Tuberculosis, Groningen, The Netherlands
- University of Groningen, University Medical Center Groningen, TB center Beatrixoord, Groningen, The Netherlands
| | - Helmut Prosch
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
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Sui DX, Ma HC, Wang CC, Shao HY, Xu SH, Fang NN. Diagnostic significance of HRCT imaging features in adult mycoplasma pneumonia: a retrospective study. Sci Rep 2024; 14:153. [PMID: 38168479 PMCID: PMC10761950 DOI: 10.1038/s41598-023-50702-3] [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: 09/14/2023] [Accepted: 12/23/2023] [Indexed: 01/05/2024] Open
Abstract
Mycoplasma pneumoniae pneumonia (MPP) often overlaps with the clinical manifestations and chest imaging manifestations of other types of community-acquired pneumonia (CAP). We retrospectively analyzed the clinical and imaging data of a group of patients with CAP, summarized their clinical and imaging characteristics, and discussed the diagnostic significance of their certain HRCT findings. The HRCT findings of CAP researched in our study included tree-in-bud sign (TIB), ground-glass opacity (GGO), tree fog sign (TIB + GGO), bronchial wall thickening, air-bronchogram, pleural effusion and cavity. The HRCT findings of all cases were analyzed. Among the 200 cases of MPP, 174 cases showed the TIB, 193 showed the GGO, 175 showed the tree fog sign, 181 lacked air-bronchogram. In case taking the tree fog sign and lack of air-bronchogram simultaneously as an index to distinguish MPP from OCAP, the sensitivity was 87.5%, the specificity was 97.5%, the accuracy was 92.5%. This study showed that that specific HRCT findings could be used to distinguish MPP from OCAP. The combined HRCT findings including the tree fog sign and lacked air-bronchogram simultaneously would contribute to a more accurate diagnosis of MPP.
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Affiliation(s)
- Dong-Xin Sui
- Department of Respiration, The Second Hospital of Shandong University, Jinan, China
| | - Han-Chen Ma
- Department of Respiration, The Second Hospital of Shandong University, Jinan, China
| | - Chao-Chao Wang
- Department of Respiration, The Second Hospital of Shandong University, Jinan, China
| | - Hong-Yan Shao
- Department of Respiration, The Second Hospital of Shandong University, Jinan, China
| | - Shao-Hua Xu
- Department of Respiration, The Second Hospital of Shandong University, Jinan, China
| | - Ning-Ning Fang
- Department of Anesthesiology, Qilu Hospital of Shandong University, No. 107, Wenhua Xi Road, Jinan, 250012, Shandong, China.
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Campos AL, Gonçalves FMF, Costa M, Alves G, Cotter J. Mycoplasma pneumoniae Infection With Cavitated Lung Lesions: A Case Report. Cureus 2022; 14:e31572. [DOI: 10.7759/cureus.31572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/16/2022] [Indexed: 11/17/2022] Open
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Debray MP, Carette MF, Loubet P, Pasquet B, Houhou Fidouh N, Benjoar M, Varon E, Brun AL, Claessens YE, Duval X, Khalil A. CT features of community-acquired pneumonia at the emergency department. Respir Med Res 2022; 81:100892. [PMID: 35489109 DOI: 10.1016/j.resmer.2022.100892] [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: 12/04/2021] [Revised: 01/26/2022] [Accepted: 02/20/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Chest computed tomography (CT) was reported to improve the diagnosis of community-acquired pneumonia (CAP) as compared to chest X-ray (CXR). The aim of this study is to describe the CT-patterns of CAP in a large population visiting the emergency department and to see if some of them are more frequently missed on CXR. MATERIALS AND METHODS This is an ancillary analysis of the prospective multicenter ESCAPED study including 319 patients. We selected the 163 definite or probable CAP based on adjudication committee classification; 147 available chest CT scans were reinterpreted by 3 chest radiologists to identify CAP patterns. These CT-patterns were correlated to epidemiological, biological and microbiological data, and compared between false negative and true positive CXR CAP. RESULTS Six patterns were identified: lobar pneumonia (51/147, 35%), including 35 with plurifocal involvement; lobular pneumonia (43/147, 29%); unilobar infra-segmental consolidation (24/147, 16%); bronchiolitis (16/147, 11%), including 4 unilobar bronchiolitis; atelectasis and bronchial abnormalities (8/147, 5.5%); interstitial pneumonia (5/147, 3.5%). Bacteria were isolated in 41% of patients with lobar pneumonia-pattern (mostly Streptococcus pneumoniae and Mycoplasma pneumonia) versus 19% in other patients (p = 0.01). Respiratory viruses were equally distributed within all patterns. CXR was falsely negative in 46/147 (31%) patients. Lobar pneumonia was significantly less missed on CXR than other patterns (p = 0.003), especially lobular pneumonia and unilobar infra-segmental consolidation, missed in 35% and 58% of cases, respectively. CONCLUSION Lobar and lobular pneumonias are the most frequent CT-patterns. Lobar pneumonia is appropriately detected on CXR and mainly due to Streptococcus pneumoniae or Mycoplasma pneumoniae. Chest CT is very useful to identify CAP in other CT-patterns. Prior the COVID pandemic, CAP was rarely responsible for interstitial opacities on CT.
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Affiliation(s)
- Marie Pierre Debray
- AP-HP, Hôpital Bichat, Service de radiologie, 46 rue Henri Huchard, 75018 Paris, France; Université de Paris Cité; INSERM UMR 1152, Paris, France.
| | - Marie France Carette
- Sorbonne Université, UPMC, Paris VI, Paris, France ; AP-HP, Hôpital Tenon, Service de radiologie, 4 rue de la Chine, 75970 Paris Cedex 20, France
| | - Paul Loubet
- VBMID, Inserm U1047, Department of Infectious and Tropical Diseases, CHU Nîmes, Place du Pr R. Debré, Univ Montpellier, 30029 Nîmes Cedex 9, France
| | - Blandine Pasquet
- AP-HP, Unité de Recherche Clinique, Hôpital Bichat, 46 rue Henri Huchard, 75018 Paris, France
| | - Nadhira Houhou Fidouh
- AP-HP, Hôpital Bichat, Service de virologie, 46 rue Henri Huchard, 75018 Paris, France
| | - Mikhael Benjoar
- AP-HP, Hôpital Tenon, Service de radiologie, 4 rue de la Chine, 75970, Paris Cedex 20, France
| | - Emmanuelle Varon
- National Reference Centre for Pneumococci, Centre Hospitalier Intercommunal de Créteil, 40 avenue de Verdun, 94000 Créteil, France
| | - Anne Laure Brun
- APHP, Groupe Hospitalier Pitié-Salpêtrière, Service de radiologie, 83 Boulevard de l'Hôpital, 75013 Paris, France; Foch Hospital, Service de radiologie, 40 rue Worth, 92150 Suresnes, France
| | - Yann Erick Claessens
- Department of Emergency Medicine, Princess Grace Hospital Center, Avenue Pasteur MC-98002 Monaco, Monaco
| | - Xavier Duval
- AP-HP, Hôpital Bichat, Centre d'Investigation Clinique, Inserm CIC 1425, F-75018 Paris, France ; Université de Paris, IAME, INSERM, F-75018 Paris
| | - Antoine Khalil
- AP-HP, Hôpital Bichat, Service de radiologie, 46 rue Henri Huchard; Université de Paris Cité - Faculté de Médecine Bichat, 75018 Paris, France; INSERM UMR 1152, Paris, France
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Liu J, Wang Y, He G, Wang X, Sun M. Quantitative CT comparison between COVID-19 and mycoplasma pneumonia suspected as COVID-19: a longitudinal study. BMC Med Imaging 2022; 22:21. [PMID: 35125096 PMCID: PMC8818096 DOI: 10.1186/s12880-022-00750-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 02/01/2022] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE The purpose of this study was to compare imaging features between COVID-19 and mycoplasma pneumonia (MP). MATERIALS AND METHODS The data of patients with mild COVID-19 and MP who underwent chest computed tomography (CT) examination from February 1, 2020 to April 17, 2020 were retrospectively analyzed. The Pneumonia-CT-LKM-PP model based on a deep learning algorithm was used to automatically quantify the number, volume, and involved lobes of pulmonary lesions, and longitudinal changes in quantitative parameters were assessed in three CT follow-ups. RESULTS A total of 10 patients with mild COVID-19 and 13 patients with MP were included in this study. There was no difference in lymphocyte counts at baseline between the two groups (1.43 ± 0.45 vs. 1.44 ± 0.50, p = 0.279). C-reactive protein levels were significantly higher in MP group than in COVID-19 group (p < 0.05). The number, volume, and involved lobes of pulmonary lesions reached a peak in 7-14 days in the COVID-19 group, but there was no peak or declining trend over time in the MP group (p < 0.05). CONCLUSION Based on the longitudinal changes of quantitative CT, pulmonary lesions peaked at 7-14 days in patients with COVID-19, and this may be useful to distinguish COVID-19 from MP and evaluate curative effects and prognosis.
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Affiliation(s)
- Junzhong Liu
- Department of Radiology, Weifang No. 2 People's Hospital, The Second Affiliated Hospital of Weifang Medical University, Weifang City, Shandong Province, China.
- Department of Medical Imaging, Weifang No. 2 People's Hospital, The Second Affiliated Hospital of Weifang Medical University, 7 Yuanxiao Street, Weifang City, 261041, Shandong Province, People's Republic of China.
| | - Yuzhen Wang
- Department of Radiology, Weifang No. 2 People's Hospital, The Second Affiliated Hospital of Weifang Medical University, Weifang City, Shandong Province, China
| | - Guanghui He
- Department of Interventional Radiology, Weifang No. 2 People's Hospital, The Second Affiliated Hospital of Weifang Medical University, Weifang City, Shandong Province, China
| | - Xinhua Wang
- Department of Radiology, Weifang No. 2 People's Hospital, The Second Affiliated Hospital of Weifang Medical University, Weifang City, Shandong Province, China
| | - Minfeng Sun
- Department of Radiology, Weifang No. 2 People's Hospital, The Second Affiliated Hospital of Weifang Medical University, Weifang City, Shandong Province, China
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Laya BF, Concepcion NDP, Garcia-Peña P, Naidoo J, Kritsaneepaiboon S, Lee EY. Pediatric Lower Respiratory Tract Infections: Imaging Guidelines and Recommendations. Radiol Clin North Am 2021; 60:15-40. [PMID: 34836562 DOI: 10.1016/j.rcl.2021.08.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Lower respiratory tract infection (LRTI) remains a major cause of morbidity and mortality in children. Various organisms cause LRTI, including viruses, bacteria, fungi, and parasites, among others. Infections caused by 2 or more organisms also occur, sometimes enhancing the severity of the infection. Medical imaging helps confirm a diagnosis but also plays a role in the evaluation of acute and chronic sequelae. Medical imaging tests help evaluate underlying pathology in pediatric patients with recurrent or long-standing symptoms as well as the immunocompromised.
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Affiliation(s)
- Bernard F Laya
- Section of Pediatric Radiology, Institute of Radiology, St. Luke's Medical Center-Quezon City, 279 E. Rodriguez Sr. Ave., Quezon City, 1112 Philippines.
| | - Nathan David P Concepcion
- Section of Pediatric Radiology, Institute of Radiology, St. Luke's Medical Center-Quezon City, 279 E. Rodriguez Sr. Ave., Quezon City, 1112 Philippines
| | - Pilar Garcia-Peña
- Autonomous University of Barcelona (AUB), University Hospital Materno-Infantil Vall d'Hebron, Pso. Vall d'Hebron 119-129, 08035 Barcelona, Spain
| | - Jaishree Naidoo
- Paeds Diagnostic Imaging and Envisionit Deep AI, 2nd Floor, One-on Jameson Building, 1 Jameson Avenue, Melrose Estate, Johannesburg, 2196, South Africa
| | - Supika Kritsaneepaiboon
- Division of Diagnostic Radiology, Department of Radiology, Faculty of Medicine, Prince of Songkla University, Kanjanavanich Road, Hat Yai, 90110, Thailand
| | - Edward Y Lee
- Department of Radiology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA
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Coenen S, de la Court JR, Buis DTP, Meijboom LJ, Schade RP, Visser CE, van Hest R, Kuijvenhoven M, Prins JM, Nijman SFM, Sieswerda E, Sigaloff KCE. Low frequency of community-acquired bacterial co-infection in patients hospitalized for COVID-19 based on clinical, radiological and microbiological criteria: a retrospective cohort study. Antimicrob Resist Infect Control 2021; 10:155. [PMID: 34717761 PMCID: PMC8556861 DOI: 10.1186/s13756-021-01024-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 10/13/2021] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND We defined the frequency of respiratory community-acquired bacterial co-infection in patients with COVID-19, i.e. patients with a positive SARS-CoV-2 PCR or a COVID-19 Reporting and Data System (CO-RADS) score ≥ 4, based on a complete clinical assessment, including prior antibiotic use, clinical characteristics, inflammatory markers, chest computed tomography (CT) results and microbiological test results. METHODS Our retrospective study was conducted within a cohort of prospectively included patients admitted for COVID-19 in our tertiary medical centres between 1-3-2020 and 1-6-2020. A multidisciplinary study team developed a diagnostic protocol to retrospectively categorize patients as unlikely, possible or probable bacterial co-infection based on clinical, radiological and microbiological parameters in the first 72 h of admission. Within the three categories, we summarized patient characteristics and antibiotic consumption. RESULTS Among 281 included COVID-19 patients, bacterial co-infection was classified as unlikely in 233 patients (82.9%), possible in 35 patients (12.4%) and probable in 3 patients (1.1%). Ten patients (3.6%) could not be classified due to inconclusive data. Within 72 h of hospital admission, 81% of the total study population and 78% of patients classified as unlikely bacterial co-infection received antibiotics. CONCLUSIONS COVID-19 patients are unlikely to have a respiratory community-acquired bacterial co-infection. This study underpins recommendations for restrictive use of antibacterial drugs in patients with COVID-19.
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Affiliation(s)
- Sophie Coenen
- Division of Infectious Diseases, Department of Internal Medicine, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, Amsterdam, The Netherlands
- Department of Medical Microbiology and Infection Prevention, Amsterdam UMC, Univ of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
| | - Jara R de la Court
- Division of Infectious Diseases, Department of Internal Medicine, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, Amsterdam, The Netherlands
- Department of Medical Microbiology and Infection Prevention, Amsterdam UMC, Univ of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
| | - David T P Buis
- Division of Infectious Diseases, Department of Internal Medicine, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, Amsterdam, The Netherlands
| | - Lilian J Meijboom
- Department of Radiology and Nuclear Medicine, Amsterdam Cardiovascular Sciences, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, Amsterdam, The Netherlands
| | - Rogier P Schade
- Department of Medical Microbiology and Infection Prevention, Amsterdam UMC, Univ of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
| | - Caroline E Visser
- Department of Medical Microbiology and Infection Prevention, Amsterdam UMC, Univ of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
| | - Reinier van Hest
- Department of Clinical Pharmacy and Pharmacology, Amsterdam UMC, Univ of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
| | - Marianne Kuijvenhoven
- Department of Clinical Pharmacy and Pharmacology, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, Amsterdam, The Netherlands
| | - Jan M Prins
- Division of Infectious Diseases, Department of Internal Medicine, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, Amsterdam, The Netherlands
| | - Suzan F M Nijman
- Department of Pulmonary Medicine, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, Amsterdam, The Netherlands
| | - Elske Sieswerda
- Department of Medical Microbiology and Infection Prevention, Amsterdam UMC, Univ of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
| | - Kim C E Sigaloff
- Division of Infectious Diseases, Department of Internal Medicine, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, Amsterdam, The Netherlands.
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Cook AE, Garrana SH, Martínez-Jiménez S, Rosado-de-Christenson ML. Imaging Patterns of Pneumonia. Semin Roentgenol 2021; 57:18-29. [DOI: 10.1053/j.ro.2021.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/14/2021] [Accepted: 10/17/2021] [Indexed: 11/11/2022]
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Tian F, Chen LP, Yuan G, Zhang AM, Jiang Y, Li S. Differences of TNF-α, IL-6 and Gal-3 in lobar pneumonia and bronchial pneumonia caused by mycoplasma pneumoniae. Technol Health Care 2021; 28:711-719. [PMID: 32200365 DOI: 10.3233/thc-192011] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
OBJECTIVE To investigate the differences of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6) and galectin-3 concentrations in lobar pneumonia and bronchopneumonia induced by mycoplasma pneumoniae (MP) in children and to explore these related factors predicting the severity of MP. METHODS A total of 148 children with mycoplasma pneumoniae pneumonia (MPP) and 32 healthy controls were analyzed from March 2017 to August 2018 in our province. Clinical information was collected from the hospitalized MP patients. The 148 patients with MPP were divided into two groups: lobar pneumonia group and bronchial pneumonia group. The 32 healthy children were considered the control group. The concentrations of TNF-α, IL-6 and Gal-3 were examined in the serum of 148 children patients with MPP and 32 healthy children by double-antibody sandwich enzyme-linked immunosorbent assay (ELISA). RESULTS The TNF-α, IL-6 and Gal-3 levels were obviously higher in both the lobar pneumonia and bronchial pneumonia groups, compared to those in the control group. Furthermore, these levels were significantly higher in the lobar pneumonia group, compared to the bronchial pneumonia group. After treatment, the levels of TNF-α, IL-6 and Gal-3 totally descended during the recovery period. CONCLUSION There are differences in serum TNF-α, IL-6 and Gal-3 concentrations in lobar pneumonia and bronchial pneumonia caused by MP in children. In general, the TNF-α, IL-6 and Gal-3 levels were significantly higher in the lobar pneumonia group, when compared to the bronchial pneumonia group. This was because most lobar pneumonia cases are much more serious than bronchial pneumonia. Moreover, it has been proven that TNF-α, IL-6 and Gal-3 may play an important role in the pathogenesis development of MPP. At the same time, these are important issues in diagnosing MPP.
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Affiliation(s)
- Fang Tian
- Department of Pediatrics, Women and Children's Hospital of Qingdao University, Qingdao, Shandong 266000, China.,Department of Pediatrics, Maternal and Child Health Hospital of Zibo, Zibo, Shandong 255011, China
| | - Li-Ping Chen
- Department of Pediatrics, Maternal and Child Health Hospital of Zibo, Zibo, Shandong 255011, China
| | - Gang Yuan
- Department of ICU, Zibo 7th People Hospital, Zibo, Shandong 255040, China
| | - Ai-Min Zhang
- Department of Pediatrics, Maternal and Child Health Hospital of Zibo, Zibo, Shandong 255011, China
| | - Yu Jiang
- Department of Pediatrics, Maternal and Child Health Hospital of Zibo, Zibo, Shandong 255011, China
| | - Shuang Li
- Department of Pediatrics, Maternal and Child Health Hospital of Zibo, Zibo, Shandong 255011, China
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Li H, Li T, Cai Q, Wang X, Liao Y, Cheng Y, Zhou Q. Development and Validation of a Radiomics Nomogram for Differentiating Mycoplasma Pneumonia and Bacterial Pneumonia. Diagnostics (Basel) 2021; 11:diagnostics11081330. [PMID: 34441265 PMCID: PMC8392308 DOI: 10.3390/diagnostics11081330] [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: 06/28/2021] [Revised: 07/17/2021] [Accepted: 07/20/2021] [Indexed: 11/16/2022] Open
Abstract
Objectives: To develop and validate a radiological nomogram combining radiological and clinical characteristics for differentiating mycoplasma pneumonia and bacterial pneumonia with similar CT findings. Methods: A total of 100 cases of pneumonia patients receiving chest CT scan were retrospectively analyzed, including 60 patients with mycoplasma pneumonia and 40 patients with bacterial pneumonia. The patients were divided into the train set (n = 70) and the test set (n = 30). The features were extracted from chest CT images of each patient by AK analysis software, then univarite analysis, spearman correlation analysis, and least absolute shrinkage and selection operator (LASSO) were utilized for dimension reduction in training set. A radiomics model was built by multivariable logistic regression based on the selected features, and a radiomics-clinical multivariable logistic regression model was built by combining imaging radiomics and clinical risk factors (age and temperature). ROC, AUC, sensitivity, specificity, and accuracy were calculated to validate the two models. The nomogram of the radiomics-clinical was built and evaluated by calibration curve. The clinical benefit of the two models was measured by using decision curve. Results: A total of 396 texture features were extracted from each chest CT image, and 10 valuable features were screened out. In the radiomics model, the AUC, sensitivity, specificity, and accuracy for the train set is 0.877, 0.762, 0.821, 78.6%, and for the test set it is 0.810, 0.667, 0.750 and 70.0%, respectively. In the radiomics-clinical model, the AUC, sensitivity, specificity, and accuracy for the train set is 0.905, 0.976, 0.714, 87.1%, and for the test set is is 0.847, 0.889, 0.667 and 80.0%, respectively. Decision curve analysis shows that both the two models increase the clinical benefits of the patients, and the radiomics-clinical model gains higher clinical benefits, compared to the radiomics model. Conclusion: The radiomics-clinical nomogram had good performance in identifying mycoplasma pneumonia and bacterial pneumonias, which would be helpful in clinical decision-making.
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Affiliation(s)
- Honglin Li
- Department of Radiology, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510000, China; (H.L.); (Q.C.); (X.W.)
| | - Ting Li
- Department of Respiratory Medicine, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510000, China;
| | - Qinxin Cai
- Department of Radiology, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510000, China; (H.L.); (Q.C.); (X.W.)
| | - Xiaozhuan Wang
- Department of Radiology, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510000, China; (H.L.); (Q.C.); (X.W.)
| | | | - Yuanxiong Cheng
- Department of Respiratory Medicine, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510000, China;
- Correspondence: (Y.C.); (Q.Z.)
| | - Quan Zhou
- Department of Radiology, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510000, China; (H.L.); (Q.C.); (X.W.)
- Correspondence: (Y.C.); (Q.Z.)
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13
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Dueck NP, Epstein S, Franquet T, Moore CC, Bueno J. Atypical Pneumonia: Definition, Causes, and Imaging Features. Radiographics 2021; 41:720-741. [PMID: 33835878 DOI: 10.1148/rg.2021200131] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Pneumonia is among the most common causes of death worldwide. The epidemiologic and clinical heterogeneity of pneumonia results in challenges in diagnosis and treatment. There is inconsistency in the definition of the group of microorganisms that cause "atypical pneumonia." Nevertheless, the use of this term in the medical and radiologic literature is common. Among the causes of community-acquired pneumonia, atypical bacteria are responsible for approximately 15% of cases. Zoonotic and nonzoonotic bacteria, as well as viruses, have been considered among the causes of atypical pneumonia in a patient who is immunocompetent and have been associated with major community outbreaks of respiratory infection, with relevant implications in public health policies. Considering the difficulty of isolating atypical microorganisms and the significant overlap in clinical manifestations, a targeted empirical therapy is not possible. Imaging plays an important role in the diagnosis and management of atypical pneumonia, as in many cases its findings may first suggest the possibility of an atypical infection. Clarifying and unifying the definition of atypical pneumonia among the medical community, including radiologists, are of extreme importance. The prompt diagnosis and prevention of community spread of some atypical microorganisms can have a relevant impact on local, regional, and global health policies. ©RSNA, 2021.
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Affiliation(s)
- Nicholas P Dueck
- From the Department of Radiology and Medical Imaging (N.P.D., S.E., J.B.) and Department of Infectious Diseases and International Health (C.C.M.), University of Virginia Medical Center, 1215 Lee St, PO Box 800170, Charlottesville, VA 22908; and Department of Radiology, Hospital de Sant Pau-Universidad Autónoma de Barcelona, Barcelona, Spain (T.F.)
| | - Samantha Epstein
- From the Department of Radiology and Medical Imaging (N.P.D., S.E., J.B.) and Department of Infectious Diseases and International Health (C.C.M.), University of Virginia Medical Center, 1215 Lee St, PO Box 800170, Charlottesville, VA 22908; and Department of Radiology, Hospital de Sant Pau-Universidad Autónoma de Barcelona, Barcelona, Spain (T.F.)
| | - Tomás Franquet
- From the Department of Radiology and Medical Imaging (N.P.D., S.E., J.B.) and Department of Infectious Diseases and International Health (C.C.M.), University of Virginia Medical Center, 1215 Lee St, PO Box 800170, Charlottesville, VA 22908; and Department of Radiology, Hospital de Sant Pau-Universidad Autónoma de Barcelona, Barcelona, Spain (T.F.)
| | - Christopher C Moore
- From the Department of Radiology and Medical Imaging (N.P.D., S.E., J.B.) and Department of Infectious Diseases and International Health (C.C.M.), University of Virginia Medical Center, 1215 Lee St, PO Box 800170, Charlottesville, VA 22908; and Department of Radiology, Hospital de Sant Pau-Universidad Autónoma de Barcelona, Barcelona, Spain (T.F.)
| | - Juliana Bueno
- From the Department of Radiology and Medical Imaging (N.P.D., S.E., J.B.) and Department of Infectious Diseases and International Health (C.C.M.), University of Virginia Medical Center, 1215 Lee St, PO Box 800170, Charlottesville, VA 22908; and Department of Radiology, Hospital de Sant Pau-Universidad Autónoma de Barcelona, Barcelona, Spain (T.F.)
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14
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Matos MJRD, Rosa MEE, Brito VM, Amaral LTW, Beraldo GL, Fonseca EKUN, Chate RC, Passos RBD, Silva MMA, Yokoo P, Sasdelli Neto R, Teles GBDS, Silva MCBD, Szarf G. Differential diagnoses of acute ground-glass opacity in chest computed tomography: pictorial essay. EINSTEIN-SAO PAULO 2021; 19:eRW5772. [PMID: 33729289 PMCID: PMC7935089 DOI: 10.31744/einstein_journal/2021rw5772] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 10/23/2020] [Indexed: 12/24/2022] Open
Abstract
Ground-glass opacity is a very frequent and unspecified finding in chest computed tomography. Therefore, it admits a wide range of differential diagnoses in the acute context, from viral pneumonias such as influenza virus, coronavirus disease 2019 and cytomegalovirus and even non-infectious lesions, such as vaping, pulmonary infarction, alveolar hemorrhage and pulmonary edema. For this diagnostic differentiation, ground glass must be correlated with other findings in imaging tests, with laboratory tests and with the patients' clinical condition. In the context of a pandemic, it is extremely important to remember the other pathologies with similar findings to coronavirus disease 2019 in the imaging exams.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Patrícia Yokoo
- Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | | | | | | | - Gilberto Szarf
- Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
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15
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Mycoplasma pneumoniae: Atypical Pathogen in Community Acquired Pneumonia. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2020. [DOI: 10.22207/jpam.14.4.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Mycoplasma pneumoniae is a one of most common reasons of respiratory tract infections in both adolescents and children with severity ranged from moderate to high. Many facts in the previous years regarding infections were induced via this organism having extra pathogenic mechanisms. Clinically, resistance to macrolide has produced internationally and represents a treatment trouble. Antimicrobial sensitivity checking out techniques have been applied, and novel antibiotics which are effective towards M. pneumoniae are present processing development. That evaluate concentrates on the several trends occurring in the previous quite a few years which beautify the grasp of that microorganism, which is one of the smallest pathogenic bacteria; however, is of extreme medical significance.
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16
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Primary Intrathoracic Sarcomas: A Review of Cross-sectional Imaging and Pathology. J Comput Assist Tomogr 2020; 44:821-832. [PMID: 33196594 DOI: 10.1097/rct.0000000000001097] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The most common sarcomas in the thorax are metastasis from an extrathoracic primary malignancy. Primary intrathoracic sarcomas are rare albeit aggressive malignancies that are diagnosed on histopathology. Although a few imaging characteristics have been described that are common to sarcomas, it is still a diagnosis of exclusion as other tumors are much more common. Like elsewhere, primary thoracic sarcomas are also classified according to their histologic features. They are a rare group of tumors that can arise from the mediastinal structures, lung, pleura, or chest wall. On imaging, differentiating these from more common malignancies like lung cancer is difficult and often requires multimodality workup and tissue sampling. A few sarcomas are very specific to their locations, such as angiosarcoma in the right atrium, leiomyosarcoma in the pulmonary artery, where imaging has high accuracy for the diagnosis. Despite being nonspecific in a majority of cases, imaging plays a pivotal role in determining the organ of origin, tumor extent, invasion of adjacent structures, and thus help to assess the surgical resectability. Although sarcomas arising from chest wall are the most common primary sarcomas in the chest, they are excluded from this review to focus only on primary intrathoracic sarcomas. The article provides a comprehensive imaging and pathology review of the rare primary intrathoracic sarcomas, including but not limited to angiosarcoma, Kaposi sarcoma, fibrosarcoma, malignant transformation of fibrous tumor of pleura, sarcomatoid mesothelioma, leiomyosarcoma, and malignant small round blue cell tumors.Key points:Primary intrathoracic sarcomas are rare but clinically important.Imaging helps to determine local extent, invasion, metastases and appropriate site/mode of biopsy.Role of pathology is paramount in diagnosis and guiding treatment based on immunogenetic/molecular typing.
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Huang ACC, Huang CG, Yang CT, Hu HC. Concomitant infection with COVID-19 and Mycoplasma pneumoniae. Biomed J 2020; 43:458-461. [PMID: 32891590 PMCID: PMC7358157 DOI: 10.1016/j.bj.2020.07.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 06/14/2020] [Accepted: 07/12/2020] [Indexed: 01/19/2023] Open
Abstract
In late 2019, cases of atypical pneumonia caused by a novel coronavirus called severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) were first reported in Wuhan, China. The disease was officially called coronavirus disease 2019 (COVID-19) and has been declared a pandemic disease by the World Health Organization (WHO). The clinical symptoms may include fever, cough, fatigue, headache, and diarrhea. The radiographic features comprise various presentations, including ground-glass opacities, tiny nodules, and consolidation. However, some atypical pathogens related to community-acquired pneumonia (CAP) may share similar presentations. They may be difficult to distinguish according to the clinical presentation and radiographic findings. Recently, there have been several reports reminding physicians to heed the possibility of co-infection with other pathogens in patients diagnosed with COVID-19. We report a COVID-19 patient co-infected with Mycoplasma pneumoniae who recovered well after combination therapy. We propose that all COVID-19 patients should undergo a meticulous screening routine to ensure that they receive adequate treatments.
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Affiliation(s)
- Allen Chung-Cheng Huang
- Department of Thoracic Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chung-Guei Huang
- Department of Laboratory Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Cheng-Ta Yang
- Department of Thoracic Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Department of Respiratory Therapy, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Han-Chung Hu
- Department of Thoracic Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Department of Respiratory Therapy, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan.
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18
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Jajodia A, Ebner L, Heidinger B, Chaturvedi A, Prosch H. Imaging in corona virus disease 2019 (COVID-19)-A Scoping review. Eur J Radiol Open 2020; 7:100237. [PMID: 32395567 PMCID: PMC7211691 DOI: 10.1016/j.ejro.2020.100237] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/04/2020] [Accepted: 05/05/2020] [Indexed: 02/06/2023] Open
Abstract
Coronavirus Disease-2019 (COVID-19) originated in the Wuhan, Hubei Province, China in November 2019 and has since been declared a pandemic by the WHO. COVID-19 is an acute infectious disease, primarily affecting the respiratory system. Currently, real-time reverse transcription polymerase chain reaction (RT-PCR) performed on respiratory specimens is considered the reference by which to diagnose COVID-19. However, the limitations of RT-PCR, specifically, the fact that it is time-consuming and inadequate for the assessment of disease severity, have affected the process of epidemiological disease containment and has taken a toll on the healthcare management chain. As the risk of infection for other patients and personnel must be kept to a minimum, the indications for imaging have to be carefully considered. Imaging is primarily performed in patients with a negative RT-PCR, but a high clinical suspicion of COVID-19, or, in patients with diagnosed COVID-19 who are suffering from moderate to severe symptoms. In this article, we review the typical imaging findings in COVID-19, the differential diagnoses, and common complications.
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Affiliation(s)
- Ankush Jajodia
- Dep. of Radiology, Rajiv Gandhi Cancer Institute and Research Centre -Delhi, India
| | - Lukas Ebner
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital University Hospital Bern, Switzerland
| | - Benedikt Heidinger
- Dept. Of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Austria
| | - Arvind Chaturvedi
- Dep. of Radiology, Rajiv Gandhi Cancer Institute and Research Centre -Delhi, India
| | - Helmut Prosch
- Dept. Of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Austria
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19
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Wen P, Wei M, Guo X, Xu YR. Mycoplasma pneumoniae infection mimicking tuberculous pleurisy in a young woman: a case report and literature review. J Int Med Res 2020; 48:300060520918701. [PMID: 32340523 PMCID: PMC7218461 DOI: 10.1177/0300060520918701] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A 30-year-old woman was admitted to a different hospital with a 2-day history of fever, cough, and expectoration. She had a history of left pulmonary tuberculosis 8 years previously. Chest computed tomography showed an infiltrate in the inferior lobe of the left lung and spot-like calcifications in the anterior lobe of the upper left lobe and lower lobe of the left lung. After antibacterial treatment, the patient’s condition deteriorated and she developed significant pleural effusion on the left side. The pleural effusion assay showed a lymphocyte-predominant exudate with a significantly increased adenosine deaminase level. The patient was transferred to our hospital with a suspected diagnosis of tuberculous pleuritis. A serum test for Mycoplasma pneumoniae-specific immunoglobulin M was positive. Because of the limitations of this test in determining the occurrence of recent infection, a thoracoscopic pleural biopsy was performed, and M. pneumoniae DNA was detected in the biopsy tissue using M. pneumoniae-specific polymerase chain reaction. Thus, the patient was diagnosed with M. pneumoniae-related parapneumonic effusion. Clinicians must be aware of the usefulness and limitations of a high adenosine deaminase level and know that lymphocyte predominance in pleural effusion does not always indicate tuberculous pleurisy, especially in areas of high tuberculosis prevalence.
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Affiliation(s)
- Peng Wen
- Department of Respiratory Medicine, Shandong Provincial Chest Hospital Affiliated to Shandong University, Jinan, China.,Department of Respiratory Medicine, Qilu Hospital of Shandong University, Jinan, China
| | - Min Wei
- Department of Respiratory Medicine, Shandong Provincial Chest Hospital Affiliated to Shandong University, Jinan, China
| | - Xue Guo
- Department of Respiratory Medicine, Shandong Provincial Chest Hospital Affiliated to Shandong University, Jinan, China
| | - Yu-Rong Xu
- Department of Respiratory Medicine, Shandong Provincial Chest Hospital Affiliated to Shandong University, Jinan, China
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20
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Wang Y, Ma L, Li Y, Li Y, Zheng Y, Zhang X. Epidemiology and clinical characteristics of pathogens positive in hospitalized children with segmental/lobar pattern pneumonia. BMC Infect Dis 2020; 20:205. [PMID: 32143599 PMCID: PMC7060602 DOI: 10.1186/s12879-020-4938-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 02/28/2020] [Indexed: 11/21/2022] Open
Abstract
Background The occurrence of segmental/lobar pattern pneumonia (S/L-PP) in children has recently increased. The pathogens of the disease may change for the misuse of antibiotics and the application of vaccines. Therefore, pathogens positive in hospitalized children with S/L-PP and their association with clinical characteristics may have changed. The aim of this study was to analyze the pathogens positive in hospitalized children with S/L-PP and their association with clinical characteristics. Method The current study analyzed the epidemiological and clinical characteristics of pathogens positive in children with S/L-PP under 14 years old at a single hospital between 1st Jan 2014 and 31st Dec 2018 retrospectively. The pathogens were detected by microbial cultivation, indirect immunofluorescence of the kit (PNEUMOSLIDE IgM), Elisa, and/or real-time PCR in the samples of the patients. Results A total of 593 children with S/L-PP received treatment at a single hospital during the study period by inclusion criteria. Four hundred fifty-one patients were single positive for one pathogen and 83 patients were positive for at least 2 pathogens. Mycoplasma pneumoniae (M.pneumoniae) (72.34%) was the most commonly detected pathogen, followed by Streptococcus pneumoniae (S.pneumoniae) (8.77%). The prevalence of M.pneumoniae in children with S/L-PP increased with time (p < 0.05). The positive rate of M.pneumoniae increased with ages of patients (p < 0.05). M.pneumoniae was statistically associated with the extrapulmonary manifestations while S.pneumoniae was statistically associated with abnormal white blood cells (WBCs) and C reactive proteins (CRPs) (p < 0.05). Conclusion M.pneumoniae was the most positive pathogen in children with S/L-PP. The positive rate of M.pneumoniae in children with S/L-PP increased with time and the ages of children. M.pneumoniae was associated with extrapulmonary manifestations while S.pneumoniae was associated with abnormal WBCs and CRPs.
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Affiliation(s)
- Yanxia Wang
- Pediatrics, Zibo Central Hospital, No. 54, Gongqingtuanxi Street, Zibo City, 255036, Shandong Province, China
| | - Liji Ma
- Pediatrics, Zibo Central Hospital, No. 54, Gongqingtuanxi Street, Zibo City, 255036, Shandong Province, China
| | - Ying Li
- Pediatrics, Zibo Central Hospital, No. 54, Gongqingtuanxi Street, Zibo City, 255036, Shandong Province, China
| | - Yuyun Li
- Pediatrics, Zibo Central Hospital, No. 54, Gongqingtuanxi Street, Zibo City, 255036, Shandong Province, China. .,Allergic Clinic, Zibo Central Hospital, No.54, Gongqingtuanxi Street, Zibo City, 255036, Shandong Province, China.
| | - Yanfei Zheng
- Pediatrics, Zibo Central Hospital, No. 54, Gongqingtuanxi Street, Zibo City, 255036, Shandong Province, China
| | - Xiaoyue Zhang
- Pediatrics, Zibo Central Hospital, No. 54, Gongqingtuanxi Street, Zibo City, 255036, Shandong Province, China
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21
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Nakanishi M, Nakashima K, Takeshita M, Yagi T, Nakayama T, Kiguchi T, Yamada H. Ability of high-resolution computed tomography to distinguish Mycoplasma pneumoniae pneumonia from other bacterial pneumonia: Significance of lateral bronchial lesions, less air bronchogram, and no peripheral predominance. Respir Investig 2020; 58:169-176. [PMID: 32146120 DOI: 10.1016/j.resinv.2020.01.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 01/17/2020] [Accepted: 01/27/2020] [Indexed: 11/16/2022]
Abstract
BACKGROUND No study has investigated the capability of high-resolution computed tomography (HRCT) to detect a lateral bronchus abnormality, degree of air bronchogram, and distribution of affected lesions in the diagnosis of Mycoplasma pneumoniae pneumonia (MPP). METHODS We prospectively enrolled patients with serologically-confirmed MPP or culture-confirmed other bacterial pneumonia (OBP). The distribution of affected areas, abnormalities in lateral bronchial lesions, the degree of air bronchogram, and previously reported findings on HRCT were evaluated for MPP and OBP. Predictive HRCT findings for MPP were determined by logistic regression analysis. We provisionally designed our HRCT criteria (negative, probable, or highly suspected) for diagnosing MPP and investigated the diagnostic yield of the HRCT criteria. RESULTS Sixty-three MPP and 126 OBP patients were included in this study. Logistic regression analysis showed that the absence of peripheral predominance, bronchial wall thickening, lateral bronchial wall thickening, intralobular or lobular ground-glass opacities, intralobular ground-glass opacities connected to a lateral bronchus, and less air bronchogram in infiltrates were significant predictors of MPP. Our HRCT criteria showed that the sensitivity and specificity in negative, probable, and highly suspected MPP were 0.0 and 0.33, 1.0 and 0.69, and 0.5 and 0.98, respectively. CONCLUSIONS HRCT had considerable ability to detect a lateral bronchial abnormality and to diagnose or rule out MPP based on the distribution of affected areas, abnormalities in lateral bronchial lesions, and the degree of air bronchogram in the infiltrates.
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Affiliation(s)
- Masanori Nakanishi
- Department of Respiratory Medicine, Ichinomiya-nishi Hospital, Ichinomiya, Japan.
| | - Kiyoshi Nakashima
- Department of Respiratory Medicine, Ichinomiya-nishi Hospital, Ichinomiya, Japan
| | - Masafumi Takeshita
- Department of Respiratory Medicine, Ichinomiya-nishi Hospital, Ichinomiya, Japan
| | - Takeo Yagi
- Department of Respiratory Medicine, Ichinomiya-nishi Hospital, Ichinomiya, Japan
| | - Tadashi Nakayama
- Department of Radiology, Ichinomiya-nishi Hospital, Ichinomiya, Japan
| | - Takao Kiguchi
- Department of Radiology, Ichinomiya-nishi Hospital, Ichinomiya, Japan
| | - Hiroki Yamada
- Department of Radiology, Ichinomiya-nishi Hospital, Ichinomiya, Japan
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22
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Lee YH, Seo H, Cha SI, Kim CH, Lee J. A case of pseudomembranous tracheitis caused by Mycoplasma pneumoniae in an immunocompetent patient. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:205. [PMID: 31205923 DOI: 10.21037/atm.2019.03.70] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Pseudomembranous tracheitis (PMT) is a rare condition characterized by pseudomembrane formation in the tracheobronchial tree that may be associated with infectious and noninfectious processes. However, PMT attributed to Mycoplasma pneumoniae (M. pneumoniae), a common atypical respiratory infectious pathogen, has not been reported till date. Here, we report about a 29-year-old woman with complaints of severe persistent cough and radiographic deterioration despite antibiotics administration for pneumonia at an outside facility. She was finally diagnosed as having PMT with bilateral diffuse bronchiolitis caused by M. pneumoniae infection. The diagnosis was made based on a bronchoscopic finding of a pseudomembrane that partially covered the membranous portion of the upper and middle trachea, a positive polymerase chain reaction (PCR) test with bronchial aspirate, and a positive serological test for M. pneumoniae without detection of any other causative pathogen through an extensive workup. Her symptoms and radiographic findings improved in response to moxifloxacin and corticosteroid treatment. This case is a rare presentation of M. pneumoniae infection complicating PMT in a young adult without any known risk factors.
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Affiliation(s)
- Yong Hoon Lee
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Hyewon Seo
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Seung Ick Cha
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Chang Ho Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Jaehee Lee
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
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Spectrum of imaging findings in pulmonary infections. Part 1: Bacterial and viral. Pol J Radiol 2019; 84:e205-e213. [PMID: 31481992 PMCID: PMC6717952 DOI: 10.5114/pjr.2019.85812] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 03/11/2019] [Indexed: 12/27/2022] Open
Abstract
Chest radiography is generally the first imaging modality used for the evaluation of pneumonia. It can establish the presence of pneumonia, determine its extent and location, and assess the response to treatment. Computed tomography is not used for the initial evaluation of pneumonia, but it may be used when the response to treatment is unusually slow. It helps to identify complications, detect any underlying chronic pulmonary disease, and also to characterise complex pneumonias. Although not diagnostic, certain imaging findings may suggest a particular microbial cause over others. Knowledge of whether pneumonia is community-acquired or nosocomial, as well as the age and immune status of the patient, can help us in narrowing the differential diagnoses. The purpose of this article is to briefly review the various pulmonary imaging manifestations of pathogenic organisms. This knowledge along with clinical history and laboratory investigations of the patient may help in guiding the treatment of pneumonia.
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Abstract
Community-acquired pneumonia refers to an acute infection of the lung in patients who did not meet any of the criteria for health care-acquired pneumonia, and is associated with at least some symptoms of acute infection, accompanied by the presence of an acute infiltrate on a chest radiograph. Chest radiography remains an important component of the evaluation of a patient with a suspicion of pneumonia, and is usually the first examination to be obtained. The diagnosis of community-acquired pneumonia is based on the presence of select clinical features and is supported by imaging of the lung, usually by chest radiography. Infection of the lower respiratory tract typically presents radiologically as one of 3 patterns: (a) focal nonsegmental or lobar pneumonia, (b) multifocal bronchopneumonia or lobular pneumonia, and (c) focal or diffuse "interstitial" pneumonia. High-resolution computed tomography allows a better depiction of the pattern and distribution of pneumonia than the radiograph but is seldom required in the evaluation of patients with suspected or proven bacterial pneumonia. However, high-resolution computed tomography is a useful adjunct to conventional radiography in selected cases.
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25
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Kim JH, Kwon JH, Lee JY, Lee JS, Ryu JM, Kim SH, Lim KS, Kim WY. Clinical features of Mycoplasma pneumoniae coinfection and need for its testing in influenza pneumonia patients. J Thorac Dis 2018; 10:6118-6127. [PMID: 30622783 DOI: 10.21037/jtd.2018.10.33] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background To investigate the clinical features of coinfection due to Mycoplasma pneumoniae (M. pneumoniae), a common copathogen in influenza, in influenza pneumonia patients. Methods We reviewed 4,465 patients with influenza who visited a tertiary care hospital emergency department in Seoul (Korea) from 2010 through 2016, and underwent immunoglobulin M (IgM) serology or polymerase chain reaction (PCR) for M. pneumoniae. Influenza pneumonia was defined as laboratory-confirmed influenza plus radiographic pneumonia. Patients with healthcare-associated pneumonia or non-mycoplasma bacterial coinfection were excluded. Clinical, laboratory, and radiographic findings and outcomes of the influenza pneumonia patients with and without M. pneumoniae coinfection were compared. Multivariable logistic regression analysis was performed to identify factors associated with the coinfection. Results Of 244 influenza pneumonia patients, 41 (16.8%) had M. pneumoniae coinfection. These patients were younger with a higher frequency of age of 5-10 years, and had higher white blood cell (WBC) and lymphocyte counts; lower concentration of C-reactive protein (CRP). The coinfection had no association with specific radiographic findings and poor outcome. Multivariable analysis showed the age of 5-10 years (adjusted odds ratio, 18.83; 95% confidence interval, 5.899-60.08; P<0.001) as the factor associated with the coinfection. Conclusions M. pneumoniae coinfection in influenza pneumonia may be associated with the age of 5-10 years, and otherwise clinically indistinct from influenza pneumonia without the coinfection. This finding suggests the need for M. pneumoniae testing in patients aged 5-10 years with influenza pneumonia.
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Affiliation(s)
- Jung Heon Kim
- Department of Emergency Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Jae Hyun Kwon
- Department of Emergency Medicine, National Medical Center, Seoul, Korea
| | - Jeong-Yong Lee
- Department of Pediatrics, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Jong Seung Lee
- Department of Emergency Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Jeong-Min Ryu
- Department of Emergency Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Sung-Han Kim
- Department of Infectious Diseases, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Kyoung Soo Lim
- Department of Emergency Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Won Young Kim
- Department of Emergency Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Bajantri B, Toolsie O, Venkatram S, Diaz-Fuentes G. Mycoplasma Pneumoniae Pneumonia: Walking Pneumonia Can Cripple the Susceptible. J Clin Med Res 2018; 10:891-897. [PMID: 30425761 PMCID: PMC6225856 DOI: 10.14740/jocmr3592w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 10/16/2018] [Indexed: 12/04/2022] Open
Abstract
Background Mycoplasma pneumoniae pneumonia (MPP), or “walking pneumonia,” is an atypical mild disease with varied clinical findings. Specifically, diagnosis is often controversial and understanding of disease presentation is limited. The goal of the study was to evaluate presentation, clinical associations and outcomes of MPP patients admitted to an inner-city hospital. Methods This was a retrospective analysis of adult patients diagnosed with MPP from January 2010 to January 2017. Primary outcomes were need for intensive care unit (ICU) care, ICU and hospital length of stay (LOS), presence of shock and need for mechanical ventilation (MV). Predictors of mortality were analyzed. Results Of the 203 patients analyzed, 16 (8%) died. Relative to survivors, non-survivors were older (65 ± 21 versus 53 ± 18, P = 0.009) and less frequently had obstructive airway disease (OAD; P = 0.003). Non-survivors also had significantly higher serum levels of lactic dehydrogenase (LDH), blood urea nitrogen (BUN), creatinine, transaminases and troponins. Finally, non-survivors more commonly exhibited shock, need for MV and bilateral lung infiltrates. There were no group differences in patient comorbidities, symptoms, antibiotic use or LOS. Predictors of mortality included age, OAD, low CD4+ T-cell counts in human immunodeficiency virus-infected patients and elevated serum levels of LDH, creatinine, BUN, leukocytes, transaminases and troponins. Conclusion Despite the availability of appropriate antibiotics, MPP incurs significant mortality and morbidity. Our study indicated that the recommended treatment includes prompt serological diagnosis, aggressive supportive care and presumptive antibiotics, especially in patients with poor prognosis.
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Affiliation(s)
- Bharat Bajantri
- Division of Pulmonary and Critical Care Medicine, Bronx Care Health System, Bronx, NY 10457, USA
| | - Omesh Toolsie
- Division of Pulmonary and Critical Care Medicine, Bronx Care Health System, Bronx, NY 10457, USA
| | - Sindhaghatta Venkatram
- Division of Pulmonary and Critical Care Medicine, Bronx Care Health System, Bronx, NY 10457, USA
| | - Gilda Diaz-Fuentes
- Division of Pulmonary and Critical Care Medicine, Bronx Care Health System, Bronx, NY 10457, USA
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Lee KS, Kim TJ, Peck KR, Han J. Infectious pneumonia in immunocompetent patients: updates in clinical and imaging features. PRECISION AND FUTURE MEDICINE 2018. [DOI: 10.23838/pfm.2018.00079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Bajantri B, Venkatram S, Diaz-Fuentes G. Mycoplasma pneumoniae: A Potentially Severe Infection. J Clin Med Res 2018; 10:535-544. [PMID: 29904437 PMCID: PMC5997415 DOI: 10.14740/jocmr3421w] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 04/09/2018] [Indexed: 01/07/2023] Open
Abstract
Mycoplasma pneumoniae infections remain one of the most common etiologies of community-acquired pneumonia (CAP). The clinical presentation and manifestations vary widely and can affect all organs of the body. Diagnosis is challenging because there are no constant findings in physical exams or laboratory or radiological assessments that indicate Mycoplasma pneumoniae pneumonia, and specific diagnostic tools are not readily available. Extrapulmonary manifestations and severe pulmonary manifestations can lead to long-term sequelae. The increasing emergence of Mycoplasma pneumoniae that is resistant to macrolides in some areas of the world and increased world travel could add to the difficulty of controlling and treating Mycoplasma pneumoniae infections. We present a concise and up-to-date review of the current knowledge of Mycoplasma pneumoniae pneumonia.
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Affiliation(s)
- Bharat Bajantri
- Division of Pulmonary Critical Care, Department of Medicine, Bronx Care Health System, Bronx, NY 10457, USA
| | - Sindhaghatta Venkatram
- Division of Pulmonary Critical Care, Department of Medicine, Bronx Care Health System, Bronx, NY 10457, USA
| | - Gilda Diaz-Fuentes
- Division of Pulmonary Critical Care, Department of Medicine, Bronx Care Health System, Bronx, NY 10457, USA
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Abstract
Fever without source is a febrile illness without localizing signs or initial obvious cause. Early workup will often include chest radiography and computed tomography (CT) of the abdomen and pelvis, with or without CT of the chest. To evaluate localizing signs or symptoms or to further evaluate findings from initial studies, targeted imaging according to body part can be performed by using radiography, ultrasonography, CT, or magnetic resonance (MR) imaging. Nuclear medicine studies can provide imaging of the whole body and may be helpful when the clinical and conventional imaging workup findings are negative or equivocal in identifying a source of fever. Nuclear medicine studies can be used to detect pathologic changes early in a disease course, even in the absence of an anatomic abnormality. Gallium 67 scintigraphy, indium 111- and technetium 99m-labeled leukocyte scintigraphy, and fluorine 18 fluorodeoxyglucose positron emission tomography (PET)/CT studies are all useful in the evaluation of fever, but the radiopharmaceutical cost for PET/CT is much lower than that for radiolabeled leukocyte studies. The increased use of bundled payments for inpatient admissions requires updated cost evaluations for the preferred nuclear medicine study. For inpatients in whom the findings from the initial clinical workup and imaging studies are nondiagnostic, PET/CT examination may be preferable to radiolabeled leukocyte studies because of its high sensitivity and lower cost. Negative findings at PET/CT can be helpful in excluding a suspected site of infection, and positive findings at PET/CT can be helpful in confirming a suspected site of infection or in identifying an unexpected cause of fever. (©)RSNA, 2016.
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Affiliation(s)
- Elizabeth H Dibble
- From the Department of Diagnostic Imaging, Alpert Medical School of Brown University and Rhode Island Hospital, 593 Eddy St, Providence, RI 02903
| | - Don C Yoo
- From the Department of Diagnostic Imaging, Alpert Medical School of Brown University and Rhode Island Hospital, 593 Eddy St, Providence, RI 02903
| | - Richard B Noto
- From the Department of Diagnostic Imaging, Alpert Medical School of Brown University and Rhode Island Hospital, 593 Eddy St, Providence, RI 02903
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Abstract
RATIONALE The etiology and outcome of diffuse acute infectious bronchiolitis (DAIB) in adults is not well known. OBJECTIVES To retrospectively review adult patients with DAIB without pneumonia, document the etiologies and outcomes, and assess the relation between DAIB and postinfectious bronchiolitis obliterans. METHODS We retrospectively analyzed medical records of 1,664 patients with lower respiratory tract infections admitted to our institution in Saitama, Japan. DAIB was diagnosed when patients developed acute feverish lower respiratory tract infection and chest computed tomography demonstrated mainly multiple centrilobular nodules in four or more lobes. Pneumonia was diagnosed when patients developed acute feverish lower respiratory tract infection and chest computed tomography demonstrated consolidation and/or ground-glass opacities with or without centrilobular nodules. MEASUREMENTS AND MAIN RESULTS Of the 1,664 patients, 20 (1.2%) and 1,644 (98.8%) patients were diagnosed as having DAIB and pneumonia, respectively. Of the 20 patients with DAIB, the etiology was determined in 16 (80%): 13 (65.0%) had a single pathogen and 3 (15.0%) had two pathogens. Detected organisms included Mycoplasma pneumoniae in eight (40.0%) patients, influenza virus in two (10.0%), influenza virus and Streptococcus pneumoniae in two (10.0%), Haemophilus influenzae in three (15.0%), and respiratory syncytial virus and rhinovirus in one (5.0%) patient. All patients improved and none developed postinfectious bronchiolitis obliterans. CONCLUSIONS The three most common etiologies of DAIB in the studied adults were M. pneumoniae, influenza virus, and H. influenzae. None of the patients with DAIB developed postinfectious bronchiolitis obliterans.
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You W, Chen B, Li J, Shou J, Xue S, Liu X, Jiang H. Pulmonary migratory infiltrates due to mycoplasma infection: case report and review of the literature. J Thorac Dis 2016; 8:E393-8. [PMID: 27293865 DOI: 10.21037/jtd.2016.03.85] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Pulmonary migratory infiltrates (PMI) are observed in a few diseases. We report here a case of PMI attributed to Mycoplasma pneumonia (Mp) infection. The patient's past medical history was characterized by fleeting and/or relapses of patchy opacification or infiltrates of parenchyma throughout the whole lung field except for left lower lobe radiographically. Serological assays revealed an elevation of IgG antibody specific to Mp and its fourfold increase in convalescent serum. Histopathological findings showed polypoid plugs of fibroblastic tissue filling and obliterating small air ways and interstitial infiltrates of mononuclear inflammatory cells in the vicinal alveolar septa. The patient was treated with azithromycin which resulted in a dramatic improvement clinically and imageologically. In spite of the increasing incidence of Mp, the possible unusual imaging manifestation and underlying mechanism haven't attracted enough attention. To our knowledge, there are rare reports of such cases.
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Affiliation(s)
- Wenjie You
- 1 Department of Respiratory Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China ; 2 Department of Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, China ; 3 Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Bi Chen
- 1 Department of Respiratory Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China ; 2 Department of Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, China ; 3 Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Jing Li
- 1 Department of Respiratory Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China ; 2 Department of Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, China ; 3 Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Juan Shou
- 1 Department of Respiratory Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China ; 2 Department of Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, China ; 3 Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Shan Xue
- 1 Department of Respiratory Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China ; 2 Department of Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, China ; 3 Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Xueqing Liu
- 1 Department of Respiratory Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China ; 2 Department of Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, China ; 3 Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Handong Jiang
- 1 Department of Respiratory Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China ; 2 Department of Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, China ; 3 Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
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Tanaka H. Correlation between Radiological and Pathological Findings in Patients with Mycoplasma pneumoniae Pneumonia. Front Microbiol 2016; 7:695. [PMID: 27242720 PMCID: PMC4862977 DOI: 10.3389/fmicb.2016.00695] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 04/26/2016] [Indexed: 11/28/2022] Open
Abstract
Studies focused on the pathological-radiological correlation of human Mycoplasma (M) pneumoniae pneumonia have rarely been reported. Therefore, we extensively reviewed the literature regarding pathological and radiological studies of Mycoplasma pneumonia, and compared findings between open lung biopsy specimen and computed tomography (CT). Major three correlations were summarized. (1) Peribronchial and perivascular cuffing characterized by mononuclear cells infiltration was correlated with bronchovascular bundles thickening on CT, which was the most common finding of this pneumonia. (2) Cellular bronchitis in the small airways accompanied with exudates or granulation tissue in the lumen revealed as centrilobular nodules on CT. (3) Neutrophils and exudates in the alveolar lumen radiologically demonstrated as air-space consolidation or ground-glass opacities. In M. pulmonis-infected mice model, pathologic patterns are strikingly different according to host cell-mediated immunity (CMI) levels; treatment with interleukin-2 lead to marked cellular bronchitis in the small airways and treatment with prednisolone or cyclosporin-A lead to neutrophils and exudates in the alveolar lumen. Patients with centrilobular nodules predominant radiologic pattern have a high level of CMI, measuring by tuberculin skin test. From these findings, up-regulation of host CMI could change radiological pattern to centrilobular nodules predominant, on the other hand down-regulation of host CMI would change radiological pattern to ground-glass opacity and consolidation. It was suggested the pathological features of M. pneumoniae pneumonia may be altered by the level of host CMI.
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Affiliation(s)
- Hiroshi Tanaka
- NPO Sapporo Cough, Asthma, and Allergy CenterSapporo, Japan
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33
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Parrott GL, Kinjo T, Fujita J. A Compendium for Mycoplasma pneumoniae. Front Microbiol 2016; 7:513. [PMID: 27148202 PMCID: PMC4828434 DOI: 10.3389/fmicb.2016.00513] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 03/29/2016] [Indexed: 12/11/2022] Open
Abstract
Historically, atypical pneumonia was a term used to describe an unusual presentation of pneumonia. Currently, it is used to describe the multitude of symptoms juxtaposing the classic symptoms found in cases of pneumococcal pneumonia. Specifically, atypical pneumonia is a syndrome resulting from a relatively common group of pathogens including Chlamydophila sp., and Mycoplasma pneumoniae. The incidence of M. pneumoniae pneumonia in adults is less than the burden experienced by children. Transmission rates among families indicate children may act as a reservoir and maintain contagiousness over a long period of time ranging from months to years. In adults, M. pneumoniae typically produces a mild, “walking” pneumonia and is considered to be one of the causes of persistent cough in patients. M. pneumoniae has also been shown to trigger the exacerbation of other lung diseases. It has been repeatedly detected in patients with bronchitis, asthma, chronic obstructive pulmonary disorder, and cystic fibrosis. Recent advances in technology allow for the rapid diagnosis of M. pneumoniae through the use of polymerase chain reaction or rapid antigen tests. With this, more effort has been afforded to identify the causative etiologic agent in all cases of pneumonia. However, previous practices, including the overprescribing of macrolide treatment in China and Japan, have created increased incidence of macrolide-resistant M. pneumoniae. Reports from these countries indicate that >85% of M. pneumoniae pneumonia pediatric cases are macrolide-resistant. Despite its extensively studied past, the smallest bacterial species still inspires some of the largest questions. The developments in microbiology, diagnostic features and techniques, epidemiology, treatment and vaccines, and upper respiratory conditions associated with M. pneumoniae in adult populations are included within this review.
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Affiliation(s)
- Gretchen L Parrott
- Department of Infectious Diseases, Respiratory and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus Nishihara, Japan
| | - Takeshi Kinjo
- Department of Infectious Diseases, Respiratory and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus Nishihara, Japan
| | - Jiro Fujita
- Department of Infectious Diseases, Respiratory and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus Nishihara, Japan
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34
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Kim YH, Kim JH, Kim SY, Lee YH. Clinical features according to chest radiologic patterns of Mycoplasmapneumonia in children. Yeungnam Univ J Med 2016. [DOI: 10.12701/yujm.2016.33.2.98] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Young Hyun Kim
- Department of Pediatrics, College of Medicine, Yeungnam University, Daegu, Korea
| | - Jin Hyeon Kim
- Department of Pediatrics, College of Medicine, Yeungnam University, Daegu, Korea
| | - Sae Yoon Kim
- Department of Pediatrics, College of Medicine, Yeungnam University, Daegu, Korea
| | - Young Hwan Lee
- Department of Pediatrics, College of Medicine, Yeungnam University, Daegu, Korea
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Scaglione M, Linsenmaier U, Schueller G, Berger F, Wirth S. Infection. EMERGENCY RADIOLOGY OF THE CHEST AND CARDIOVASCULAR SYSTEM 2016. [PMCID: PMC7120007 DOI: 10.1007/174_2016_38] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Community-Acquired Pneumonia (CAP) is the first leading cause of death due to infection worldwide.Many gram-positive, gram-negative bacteria, funguses and viruses can cause the infectious pulmonary disease, and the severity of pneumonia depends on the balance between the microorganism charge, the body immunity defenses and the quality of the underlying pulmonary tissue. The microorganisms may reach the lower respiratory tract from inhaled air or from infected oropharyngeal secretions. The same organism may produce several different patterns that depend on the balance between the microorganism charge and the body immunity defenses.CAP is classified into three main groups: lobar pneumonia, bronchopneumonia and interstitial pneumonia.Lobar pneumonia is characterized by the filling of alveolar spaces by edema full of white and inflammatory cells. Necrotizing pneumonia consists of a fulminant process associated with focal areas of necrosis that results in abscesses. Bronchopneumonia or lobular pneumonia, is characterized by a peribronchiolar inflammation with thickening of peripheral bronchial wall, the diffusion of inflammation to the centrilobular alveolar spaces and development of nodules.The interstitial pneumonia represents with the destruction and esfoliation of the respiratory ciliated and mucous cells. The interstitial septa, the bronchial and bronchiolar walls become thickened for the inflammation process and lymphocytes interstitial infiltrates.Chest radiography represents an important initial examination in all patients suspected of having pulmonary infection and for monitoring response to therapy.Its role is to identify the pulmonary opacities, their internal characteristics and distribution, pleural effusion and presence of other complications as abscesses and pneumothorax.High spatial CT resolution allows accurate assessment of air space inflammation.The CT findings include nodules, interlobular septal thickening, intralobular reticular opacities, ground-glass opacities, tree-in-bud pattern, lobar-segmental consolidation, lobular consolidation, abscesses, pneumatocele, pleural effusion, pericardial effusion, mediastinal and hilar lymphoadenopaties, airway dilatation and emphysema.
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Affiliation(s)
- Mariano Scaglione
- Dept of Radiology, Pineta Grande Medical Center, Castel Volturno, Caserta, Italy
| | | | | | - Ferco Berger
- VU University Medical Center, Amsterdam, The Netherlands
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Gao J, Yue B, Li H, Chen R, Wu C, Xiao M. Epidemiology and clinical features of segmental/lobar pattern Mycoplasma pneumoniae pneumonia: A ten-year retrospective clinical study. Exp Ther Med 2015; 10:2337-2344. [PMID: 26668638 DOI: 10.3892/etm.2015.2818] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2014] [Accepted: 10/01/2015] [Indexed: 12/17/2022] Open
Abstract
Mycoplasma pneumoniae plays an important role in community-acquired pneumonia. However, epidemiological and clinical studies on the segmental/lobar pattern (S/L) radiographic-pathologic subtype of pediatric Mycoplasma pneumoniae pneumonia (MPP) are rare. The current study retrospectively analyzed the epidemiological and clinical characteristics of pediatric MPP patients. A total of 1,933 children with MPP received treatment at a single hospital between 2000 and 2009, of which 684 (35.4%) were diagnosed with S/L-MPP. The annual incidence of S/L-MPP in children with MPP increased throughout the duration of this study (from 6.4 to 59.6%, P<0.001), which was particularly evident after 2003. S/L-MPP was predominantly found in pre-school-aged children (4-6 years old; 56.6%). Compared with non-S/L-MPP, S/L-MPP was more closely associated with severe manifestations, including higher rates of fever (90.2 vs. 83.3%), pleural effusion (3.9 vs. 1.3%), extrapulmonary manifestations (26.2 vs. 21.2%), abnormal white blood cell counts (65.5 vs. 55.2%), abnormal C-reactive protein levels (30.9 vs. 23.7%) and bacterial co-infection (32.0 vs. 24.9%), as well as longer durations of fever (4.13±4.28 vs. 3.02±2.22 days) and hospitalization (12.70±4.54 vs. 9.22±5.12 days). Older S/L-MPP patients showed higher rates and longer durations of fever and cough; however, they also displayed a lower rate of extrapulmonary manifestations when compared with younger patients. In conclusion, the annual incidence of S/L-MPP has increased in recent years. Pre-school-aged children (4-6 years) with MPP are more likely to display a segmental/lobar pattern, which is associated with more severe clinical manifestations than other MPP infection patterns.
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Affiliation(s)
- Jian Gao
- Department of Pediatrics, Weifang Maternal and Child Health Hospital, Weifang, Shandong 261011, P.R. China
| | - Baozhu Yue
- Department of Pediatrics, Weifang Maternal and Child Health Hospital, Weifang, Shandong 261011, P.R. China
| | - Haitao Li
- Pulmonary Department, Weifang Chest Hospital, Weifang, Shandong 261011, P.R. China
| | - Rong Chen
- Department of Pediatrics, Weifang Maternal and Child Health Hospital, Weifang, Shandong 261011, P.R. China
| | - Chunlian Wu
- Department of Pediatrics, Weifang Maternal and Child Health Hospital, Weifang, Shandong 261011, P.R. China
| | - Mili Xiao
- Department of Neonatology, Children's Hospital of Fudan University, Shanghai 201102, P.R. China
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Community-acquired pneumonia: a correlative study between chest radiographic and HRCT findings. Jpn J Radiol 2015; 33:317-28. [PMID: 25895159 DOI: 10.1007/s11604-015-0420-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Accepted: 04/03/2015] [Indexed: 10/23/2022]
Abstract
PURPOSE To elucidate what kinds of lesions tend to be overlooked or misinterpreted and why they were overlooked or misinterpreted on chest radiographs in the diagnosis of community-acquired pneumonia (CAP) by comparing radiographic findings with HRCT findings. MATERIALS AND METHODS In 129 patients with CAP (107 bacterial and 22 atypical) and 105 healthy subjects, the chest radiographic findings were correlated with the HRCT findings. The diagnostic accuracy of each chest radiographic finding was evaluated by comparing it with the HRCT finding. RESULTS The false negative rate of radiographic interpretation tended to be higher for nodules and thickening of the bronchial wall, especially in patients with atypical pneumonia. The most frequent reason for false negative interpretations of nodules and bronchial wall thickening was the overlapping of these findings with airspace consolidation or ground-glass opacity (GGO). Thin lesions were the most frequent reasons for the false negative interpretation of airspace consolidation and GGO. CONCLUSION The chest radiographic interpretations of GGO and airspace consolidation were influenced by the thickness of lesions, and those of nodules and thickening of bronchial walls were influenced by coexisting GGO and airspace consolidation and may contribute to a misinterpretation of these lesions and an incorrect diagnosis of CAP.
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38
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Goodman P, Prosch H, Herold CJ. Imaging of Pulmonary Infections. DISEASES OF THE CHEST AND HEART 2015–2018 2015. [PMCID: PMC7121828 DOI: 10.1007/978-88-470-5752-4_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Pulmonary infection is one of the most frequent causes of morbidity and mortality throughout the world. Many infections occur in individuals with concomitant intrapulmonary or extrathoracic diseases; however, they commonly develop in otherwise healthy people. In the non-immunocompromised population, pneumonia is the most prevalent community-acquired infection and the second most common nosocomial infectious disorder. In immunocompromised patients, in children, and in the elderly, pneumonia, as well as other pulmonary infections, may develop into a life-threatening condition.
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Guo Q, Li HY, Zhou YP, Li M, Chen XK, Peng HL, Yu HQ, Liang LH, Zhao QZ, Jiang M. Associations of radiological features in Mycoplasma pneumoniae pneumonia. Arch Med Sci 2014; 10:725-32. [PMID: 25276157 PMCID: PMC4175773 DOI: 10.5114/aoms.2014.44863] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2012] [Revised: 10/12/2012] [Accepted: 12/03/2012] [Indexed: 01/24/2023] Open
Abstract
INTRODUCTION The associations of radiological features with clinical and laboratory findings in Mycoplasma pneumoniae infection are poorly understood. The purpose of this study was to assess the associations. MATERIAL AND METHODS A retrospective cohort study of 1230 patients with community-acquired pneumonia was carried out between January 2005 and December 2009. The diagnosis of M. pneumoniae infection was made using the indirect microparticle agglutinin assay and enzyme-linked immunosorbent assay. RESULTS Females were more susceptible to M. pneumoniae infection. Ground-glass opacification on radiographs was positively associated with M. pneumoniae-IgM titres (rank correlation coefficient (r s) = 0.141, p = 0.006). The left upper lobe was more susceptible to infection with M. pneumoniae compared with other pathogens. More increases in the risk of multilobar opacities were found among older or male patients with M. pneumoniae pneumonia (odds ratio, 1.065, 3.279; 95% confidence interval, 1.041-1.089, 1.812-5.934; p < 0.001, p < 0.001; respectively). Patients with M. pneumoniae pneumonia showing multilobar opacities or consolidation had a significantly longer hospital length of stay (r s = 0.111, r s = 0.275; p = 0.033, p < 0.001; respectively), incurring significantly higher costs (r s = 0.119, r s = 0.200; p = 0.022, p < 0.001; respectively). CONCLUSIONS Our study highlighted female susceptibility to M. pneumoniae pneumonia and the association of ground-glass opacification with higher M. pneumoniae-IgM titres. The left upper lobe might be more susceptible to M. pneumoniae infection. Older or male patients with M. pneumoniae pneumonia were more likely to show multilobar opacities. Multilobar opacities and consolidation were positively associated with hospital length of stay and costs.
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Affiliation(s)
- Qi Guo
- Department of Respiratory Medicine, Affiliated Futian Hospital, Guangdong Medical College, Shenzhen, Guangdong, China
| | - Hai-Yan Li
- Department of Primary Care, Affiliated Futian Hospital, Guangdong Medical College, Shenzhen, Guangdong, China
| | - Yi-Ping Zhou
- Department of Respiratory Medicine, Affiliated Futian Hospital, Guangdong Medical College, Shenzhen, Guangdong, China
| | - Ming Li
- Department of Respiratory Medicine, Affiliated Futian Hospital, Guangdong Medical College, Shenzhen, Guangdong, China
| | - Xiao-Ke Chen
- Department of Respiratory Medicine, Affiliated Futian Hospital, Guangdong Medical College, Shenzhen, Guangdong, China
| | - Hong-Lin Peng
- Department of Respiratory Medicine, Affiliated Futian Hospital, Guangdong Medical College, Shenzhen, Guangdong, China
| | - Hai-Qiong Yu
- Department of Respiratory Medicine, Affiliated Futian Hospital, Guangdong Medical College, Shenzhen, Guangdong, China
| | - Li-Hua Liang
- Department of Radiology, Affiliated Futian Hospital, Guangdong Medical College, Shenzhen, Guangdong, China
| | - Qing-Zhou Zhao
- Department of Radiology, Affiliated Futian Hospital, Guangdong Medical College, Shenzhen, Guangdong, China
| | - Mei Jiang
- Guangzhou Institute of Respiratory Diseases (State Key Laboratory of Respiratory Diseases), First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
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Saraya T, Kurai D, Nakagaki K, Sasaki Y, Niwa S, Tsukagoshi H, Nunokawa H, Ohkuma K, Tsujimoto N, Hirao S, Wada H, Ishii H, Nakata K, Kimura H, Kozawa K, Takizawa H, Goto H. Novel aspects on the pathogenesis of Mycoplasma pneumoniae pneumonia and therapeutic implications. Front Microbiol 2014; 5:410. [PMID: 25157244 PMCID: PMC4127663 DOI: 10.3389/fmicb.2014.00410] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Accepted: 07/20/2014] [Indexed: 01/30/2023] Open
Abstract
Mycoplasma pneumoniae (Mp) is a leading cause of community acquired pneumonia. Knowledge regarding Mp pneumonia obtained from animal models or human subjects has been discussed in many different reports. Accumulated expertise concerning this critical issue has been hard to apply clinically, and potential problems may remain undiscovered. Therefore, our multidisciplinary team extensively reviewed the literature regarding Mp pneumonia, and compared findings from animal models with those from human subjects. In human beings, the characteristic pathological features of Mp pneumonia have been reported as alveolar infiltration with neutrophils and lymphocytes and lymphocyte/plasma cell infiltrates in the peri-bronchovascular area. Herein, we demonstrated the novel aspects of Mp pneumonia that the severity of the Mp pneumonia seemed to depend on the host innate immunity to the Mp, which might be accelerated by antecedent Mp exposure (re-exposure or latent respiratory infection) through up-regulation of Toll-like receptor 2 expression on bronchial epithelial cells and alveolar macrophages. The macrolides therapy might be beneficial for the patients with macrolide-resistant Mp pneumonia via not bacteriological but immunomodulative effects. This exhaustive review focuses on pathogenesis and extends to some therapeutic implications such as clarithromycin, and discusses the various diverse aspects of Mp pneumonia. It is our hope that this might lead to new insights into this common respiratory disease.
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Affiliation(s)
- Takeshi Saraya
- Department of Respiratory Medicine, Kyorin University School of Medicine Mitaka, Japan
| | - Daisuke Kurai
- Department of Respiratory Medicine, Kyorin University School of Medicine Mitaka, Japan
| | - Kazuhide Nakagaki
- Department of Virology and Immunology, College of Veterinary Medicine, Nippon Veterinary and Animal Science University Mitaka, Japan
| | - Yoshiko Sasaki
- Gunma Prefectural Institute of Public Health and Environmental Sciences Maebashi, Japan
| | - Shoichi Niwa
- Gunma Prefectural Institute of Public Health and Environmental Sciences Maebashi, Japan
| | - Hiroyuki Tsukagoshi
- Gunma Prefectural Institute of Public Health and Environmental Sciences Maebashi, Japan
| | - Hiroki Nunokawa
- Department of Respiratory Medicine, Kyorin University School of Medicine Mitaka, Japan
| | - Kosuke Ohkuma
- Department of Respiratory Medicine, Kyorin University School of Medicine Mitaka, Japan
| | - Naoki Tsujimoto
- Department of Respiratory Medicine, Kyorin University School of Medicine Mitaka, Japan
| | - Susumu Hirao
- Department of Respiratory Medicine, Kyorin University School of Medicine Mitaka, Japan
| | - Hiroo Wada
- Department of Respiratory Medicine, Kyorin University School of Medicine Mitaka, Japan
| | - Haruyuki Ishii
- Department of Respiratory Medicine, Kyorin University School of Medicine Mitaka, Japan
| | - Koh Nakata
- Bioscience Medical Research Center, Niigata University Medical and Dental Hospital Niigata, Japan
| | - Hirokazu Kimura
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases Tokyo, Japan
| | - Kunihisa Kozawa
- Gunma Prefectural Institute of Public Health and Environmental Sciences Maebashi, Japan
| | - Hajime Takizawa
- Department of Respiratory Medicine, Kyorin University School of Medicine Mitaka, Japan
| | - Hajime Goto
- Department of Respiratory Medicine, Kyorin University School of Medicine Mitaka, Japan
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Infections. RADIOLOGY ILLUSTRATED: PEDIATRIC RADIOLOGY 2014. [PMCID: PMC7124155 DOI: 10.1007/978-3-642-35573-8_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Lower respiratory tract infection is a very common illness in children and is a significant cause of morbidity and mortality. Clinical signs and symptoms are nonspecific especially in infants and younger children and some even present with nonrespiratory complaints. Infectious agents causing pneumonia is not limited to viruses and bacteria, but it could also be due to Mycoplasma, Mycobacteria, fungi, protozoa, and parasites. Coinfection with two or more microbial agents can also occur. The etiologic agent of lower respiratory infection in a child is often difficult to obtain, but the patient’s age can help narrow the possible cause. Microbiological tests are important but could be difficult to obtain especially in younger children. Various medical imaging modalities not only play an important role as an aid in diagnosis but can also help during and after therapy. Imaging can also help evaluate complications to pneumonia and exclude other causes of respiratory distress including underlying developmental anomalies, foreign body, gastroesophageal reflux disease, and aspiration. In this chapter, the imaging modalities utilized in the detection of pulmonary infections will be discussed. The spectrum of typical imaging findings for various etiologic agents in both immunocompetent and immunocompromised children will be presented.
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Brownback KR, Simpson SQ. Association of bronchoalveolar lavage yield with chest computed tomography findings and symptoms in immunocompromised patients. Ann Thorac Med 2013; 8:153-9. [PMID: 23922610 PMCID: PMC3731857 DOI: 10.4103/1817-1737.114302] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 03/17/2013] [Indexed: 11/15/2022] Open
Abstract
INTRODUCTION: Fiber-optic bronchoscopy (FOB) with bronchoalveolar lavage (BAL) is a common procedure performed in immunocompromised patients with undiagnosed pulmonary pathology. Identifying patients with the highest potential diagnostic yield may help to avoid morbidity in patients unlikely to benefit from the procedure. We sought to determine which patient factors, specifically chest computed tomography (CT) findings, affected diagnostic yield of BAL. METHODS: Retrospective chart review of immunocompromised patients who underwent FOB with BAL from 01/01/2010 to 12/31/2011 at an academic medical center was performed. The lung lobe lavaged, characteristics of pulmonary infiltrate on radiograph, patient symptoms, and diagnostic yield were collected. A positive diagnostic yield was defined as a positive microbiological culture, finding on cytopathologic staining, diffuse alveolar hemorrhage, alveolar eosinophilia or a positive immunologic or nucleic acid assay. RESULTS: The overall diagnostic yield was 52.6%. Infiltrates that were predominantly reticular or nodular by CT had a lower diagnostic yield than predominantly consolidated, ground-glass, or tree-in-bud infiltrates (36.5% vs. 61.2%, P = 0.0058). The diagnostic yield was significantly improved in patients with both fever and chest symptoms compared to patients without symptoms (61.3% vs. 29.6%, P = 0.0066). CONCLUSION: CT findings of reticular and nodular infiltrates portend a worse diagnostic yield from BAL than those that are alveolar in nature. Symptomatic patients are more likely to have diagnostic FOB with BAL than asymptomatic patients.
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Affiliation(s)
- Kyle R Brownback
- Division of Pulmonary and Critical Care Medicine, University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS, USA
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Cha SI, Shin KM, Jeon KN, Yoo SS, Lee J, Lee SY, Kim CH, Park JY, Jung TH. Clinical relevance and characteristics of pleural effusion in patients with Mycoplasma pneumoniae pneumonia. ACTA ACUST UNITED AC 2012; 44:793-7. [DOI: 10.3109/00365548.2012.681696] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Wijesinghe M, Perrin K, Healy B, Weatherall M, Beasley R. Randomized controlled trial of high concentration oxygen in suspected community-acquired pneumonia. J R Soc Med 2012; 105:208-16. [PMID: 22532661 DOI: 10.1258/jrsm.2012.110084] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE To determine whether high concentration oxygen increases the PaCO(2) in the treatment of community-acquired pneumonia. DESIGN Randomized controlled clinical trial in which patients received high concentration oxygen (8 L/min via medium concentration mask) or titrated oxygen (to achieve oxygen saturations between 93 and 95%) for 60 minutes. Transcutaneous CO(2) (PtCO(2)) was measured at 0, 20, 40 and 60 minutes. SETTING The Emergency Departments at Wellington, Hutt and Kenepuru Hospitals. PARTICIPANTS 150 patients with suspected community-acquired pneumonia presenting to the Emergency Department. Patients with chronic obstructive pulmonary disease (COPD) or disorders associated with hypercapnic respiratory failure were excluded. MAIN OUTCOME VARIABLES The primary outcome variable was the proportion of patients with a rise in PtCO(2) ≥4 mmHg at 60 minutes. Secondary outcome variables included the proportion of patients with a rise in PtCO(2) ≥8 mmHg at 60 minutes. RESULTS The proportion of patients with a rise in PtCO(2) ≥4 mmHg at 60 minutes was greater in the high concentration oxygen group, 36/72 (50.0%) vs 11/75 (14.7%), relative risk (RR) 3.4 (95% CI 1.9 to 6.2), P < 0.001. The high concentration group had a greater proportion of patients with a rise in PtCO(2) ≥8 mmHg, 11/72 (15.3%) vs 2/75 (2.7%), RR 5.7 (95% CI 1.3 to 25.0), P = 0.007. Amongst the 74 patients with radiological confirmation of pneumonia, the high concentration group had a greater proportion with a rise in PtCO(2) ≥4 mmHg, 20/35 (57.1%) vs 5/39 (12.8%), RR 4.5 (95% CI 1.9 to 10.6) P < 0.001. CONCLUSIONS We conclude that high concentration oxygen therapy increases the PtCO(2) in patients presenting with suspected community-acquired pneumonia. This suggests that the potential increase in PaCO(2) with high concentration oxygen therapy is not limited to COPD, but may also occur in other respiratory disorders with abnormal gas exchange.
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Affiliation(s)
- Meme Wijesinghe
- Medical Research Institute of New Zealand, Wellington 6242, New Zealand
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Guo W, Wang J, Sheng M, Zhou M, Fang L. Radiological findings in 210 paediatric patients with viral pneumonia: a retrospective case study. Br J Radiol 2012; 85:1385-9. [PMID: 22514104 DOI: 10.1259/bjr/20276974] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
OBJECTIVE The objective of this study was to assess the radiological presentations of different types of viral pneumonia in children. METHODS Nasopharyngeal swab specimens and bronchial aspirate samples from children with acute respiratory infections were obtained and tested for influenza B, adenovirus, respiratory syncytial virus and parainfluenza (Types 1, 2 and 3) by direct immunofluorescence assay, or for influenza A (Subtype H1N1) by quantitative real-time polymerase chain reaction. The chest radiographs of the 210 confirmed cases of viral pneumonia were analysed retrospectively by two independent radiologists for the identification, characterisation and description of the distribution of imaging abnormalities. The cases were divided into six groups on the basis of confirmed causative viral agent, and radiographic findings were compared, analysed and presented. RESULTS The abnormal chest radiograph findings consisted of bilateral patchy areas of consolidation (n=133), interstitial lung disease (n=33), diffuse areas of air space consolidation (n=29) and lobar consolidation (n=15). The abnormalities were distributed bilaterally in 195 cases and observed more frequently in the lower zones than in other regions. The radiological findings varied significantly among the six groups (p=0.0050). Pairwise comparison showed significant difference between influenza A (H1N1) and adenovirus (p=0.0031) only. CONCLUSION The predominant radiological finding in paediatric viral pneumonia was bilateral patchy areas of consolidation. The radiological findings differed significantly only between adenovirus and influenza A pneumonia. The diagnosis of the specific causative organism requires laboratory confirmation.
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Affiliation(s)
- W Guo
- Radiology Department, The Children's Hospital Affiliated to Soochow University, Suzhou, China
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Reynolds JH, McDonald G, Alton H, Gordon SB. Pneumonia in the immunocompetent patient. Br J Radiol 2011; 83:998-1009. [PMID: 21088086 DOI: 10.1259/bjr/31200593] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Pneumonia is an acute inflammation of the lower respiratory tract. Lower respiratory tract infection is a major cause of mortality worldwide. Pneumonia is most common at the extremes of life. Predisposing factors in children include an under-developed immune system together with other factors, such as malnutrition and over-crowding. In adults, tobacco smoking is the single most important preventable risk factor. The commonest infecting organisms in children are respiratory viruses and Streptoccocus pneumoniae. In adults, pneumonia can be broadly classified, on the basis of chest radiographic appearance, into lobar pneumonia, bronchopneumonia and pneumonia producing an interstitial pattern. Lobar pneumonia is most commonly associated with community acquired pneumonia, bronchopneumonia with hospital acquired infection and an interstitial pattern with the so called atypical pneumonias, which can be caused by viruses or organisms such as Mycoplasma pneumoniae. Most cases of pneumonia can be managed with chest radiographs as the only form of imaging, but CT can detect pneumonia not visible on the chest radiograph and may be of value, particularly in the hospital setting. Complications of pneumonia include pleural effusion, empyema and lung abscess. The chest radiograph may initially indicate an effusion but ultrasound is more sensitive, allows characterisation in some cases and can guide catheter placement for drainage. CT can also be used to characterise and estimate the extent of pleural disease. Most lung abscesses respond to medical therapy, with surgery and image guided catheter drainage serving as options for those cases who do not respond.
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Affiliation(s)
- J H Reynolds
- Department of Radiology, Birmingham Heartlands Hospital, Bordesley Green East, Birmingham, UK.
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Okada F, Ando Y, Tanoue S, Ishii R, Matsushita S, Ono A, Maeda T, Mori H. Radiological findings in acute Haemophilus influenzae pulmonary infection. Br J Radiol 2011; 85:121-6. [PMID: 21224303 DOI: 10.1259/bjr/48077494] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVE The aim of this study was to assess pulmonary thin-section CT findings in patients with acute Haemophilus influenzae pulmonary infection. METHODS Thin-section CT scans obtained between January 2004 and March 2009 from 434 patients with acute H. influenzae pulmonary infection were retrospectively evaluated. Patients with concurrent infection diseases, including Streptococcus pneumoniae (n=76), Staphylococcus aureus (n=58) or multiple pathogens (n=89) were excluded from this study. Thus, our study group comprised 211 patients (106 men, 105 women; age range, 16-91 years, mean, 63.9 years). Underlying diseases included cardiac disease (n=35), pulmonary emphysema (n=23), post-operative status for malignancy (n=20) and bronchial asthma (n=15). Frequencies of CT patterns and disease distribution of parenchymal abnormalities, lymph node enlargement and pleural effusion were assessed by thin-section CT. RESULTS The CT findings in patients with H. influenzae pulmonary infection consisted mainly of ground-glass opacity (n=185), bronchial wall thickening (n=181), centrilobular nodules (n=137) and consolidation (n=112). These abnormalities were predominantly seen in the peripheral lung parenchyma (n=108). Pleural effusion was found in 22 patients. Two patients had mediastinal lymph node enlargement. CONCLUSION These findings in elderly patients with smoking habits or cardiac disease may be characteristic CT findings of H. influenzae pulmonary infection.
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Affiliation(s)
- F Okada
- Oita University Faculty of Medicine, Yufu, Oita, Japan
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Maffessanti M, Dalpiaz G. Computed Tomography of Diffuse Lung Diseases and Solitary Pulmonary Nodules. PRACTICAL PULMONARY PATHOLOGY: A DIAGNOSTIC APPROACH 2011:27-89. [DOI: 10.1016/b978-1-4160-5770-3.00003-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Natori H, Koga T, Fujimoto K, Taguchi J, Kamimura T, Nishimura M. Organizing pneumonia associated with Mycoplasma pneumoniae infection. Jpn J Radiol 2010; 28:688-91. [PMID: 21113754 DOI: 10.1007/s11604-010-0473-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2010] [Accepted: 06/01/2010] [Indexed: 11/28/2022]
Abstract
Mycoplasma pneumoniae infection is known to produce infiltrative and/or nodular opacities that are often localized. A patient presented to us with diffuse centrilobular, peribronchovascular, and perilobular opacities after documented Mycoplasma pneumoniae infection. A surgical biopsy proved the lung disease to be organizing pneumonia, which dramatically resolved in response to treatment with corticosteroid. This case represents an unusual radiological manifestation associated with M. pneumoniae infection, thereby stressing the importance of this disease in the differential diagnosis for patients with diffuse opacities of the lungs.
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Affiliation(s)
- Hiroki Natori
- Department of Respiratory Medicine, Asakura Medical Association Hospital, Japan
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Godoy MC, Nonaka D, Lowy J, Ko JP. Ground-Glass Centrilobular Nodules on Multidetector CT Scan. Chest 2010; 138:427-33. [DOI: 10.1378/chest.09-1923] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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