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Gutiérrez-Villanueva A, Quintana-Reyes C, Martínez de Antonio E, Rodríguez-Alfonso B, Velásquez K, de la Iglesia A, Bautista G, Escudero-Gómez C, Duarte R, Fernández-Cruz A. Usefulness of 18F-FDG PET-CT in the Management of Febrile Neutropenia: A Retrospective Cohort from a Tertiary University Hospital and a Systematic Review. Microorganisms 2024; 12:307. [PMID: 38399711 PMCID: PMC10893204 DOI: 10.3390/microorganisms12020307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 01/26/2024] [Accepted: 01/29/2024] [Indexed: 02/25/2024] Open
Abstract
Febrile neutropenia (FN) is a complication of hematologic malignancy therapy. An early diagnosis would allow optimization of antimicrobials. The 18F-FDG-PET-CT may be useful; however, its role is not well established. We analyzed retrospectively patients with hematological malignancies who underwent 18F-FDG-PET-CT as part of FN management in our university hospital and compared with conventional imaging. In addition, we performed a systematic review of the literature assessing the usefulness of 18F-FDG-PET-CT in FN. A total of 24 cases of FN underwent 18F-FDG-PET-CT. In addition, 92% had conventional CT. In 5/24 episodes (21%), the fever was of infectious etiology: two were bacterial, two were fungal, and one was parasitic. When compared with conventional imaging, 18F-FDG-PET-CT had an added value in 20 cases (83%): it diagnosed a new site of infection in 4 patients (17%), excluded infection in 16 (67%), and helped modify antimicrobials in 16 (67%). Antimicrobials could be discontinued in 10 (41.6%). We identified seven publications of low quality and one randomized trial. Our results support those of the literature. The available data suggest that 18F-FDG-PET-CT is useful in the management of FN, especially to diagnose fungal infections and rationalize antimicrobials. This review points out the low level of evidence and indicates the gaps in knowledge.
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Affiliation(s)
- Andrea Gutiérrez-Villanueva
- Infectious Diseases Unit, Internal Medicine Department, Hospital Universitario Puerta de Hierro-Majadahonda, Instituto de Investigación Sanitaria Puerta de Hierro-Segovia de Arana, 28222 Madrid, Spain;
| | - Claudia Quintana-Reyes
- Hematology Department, Hospital Universitario Puerta de Hierro-Majadahonda, 28222 Madrid, Spain; (C.Q.-R.); (E.M.d.A.); (A.d.l.I.); (G.B.); (R.D.)
| | - Elena Martínez de Antonio
- Hematology Department, Hospital Universitario Puerta de Hierro-Majadahonda, 28222 Madrid, Spain; (C.Q.-R.); (E.M.d.A.); (A.d.l.I.); (G.B.); (R.D.)
| | - Begoña Rodríguez-Alfonso
- Nuclear Medicine Department, Hospital Universitario Puerta de Hierro-Majadahonda, 28222 Madrid, Spain; (B.R.-A.); (K.V.)
| | - Karina Velásquez
- Nuclear Medicine Department, Hospital Universitario Puerta de Hierro-Majadahonda, 28222 Madrid, Spain; (B.R.-A.); (K.V.)
| | - Almudena de la Iglesia
- Hematology Department, Hospital Universitario Puerta de Hierro-Majadahonda, 28222 Madrid, Spain; (C.Q.-R.); (E.M.d.A.); (A.d.l.I.); (G.B.); (R.D.)
| | - Guiomar Bautista
- Hematology Department, Hospital Universitario Puerta de Hierro-Majadahonda, 28222 Madrid, Spain; (C.Q.-R.); (E.M.d.A.); (A.d.l.I.); (G.B.); (R.D.)
| | | | - Rafael Duarte
- Hematology Department, Hospital Universitario Puerta de Hierro-Majadahonda, 28222 Madrid, Spain; (C.Q.-R.); (E.M.d.A.); (A.d.l.I.); (G.B.); (R.D.)
- Facultad de Medicina, Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain
| | - Ana Fernández-Cruz
- Infectious Diseases Unit, Internal Medicine Department, Hospital Universitario Puerta de Hierro-Majadahonda, Instituto de Investigación Sanitaria Puerta de Hierro-Segovia de Arana, 28222 Madrid, Spain;
- Facultad de Medicina, Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain
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Tew M, Douglas AP, Szer J, Bajel A, Harrison SJ, Tio SY, Worth LJ, Hicks RJ, Ritchie D, Slavin MA, Thursky KA, Dalziel K. Evaluating the cost-effectiveness of [ 18F]FDG-PET/CT for investigation of persistent or recurrent neutropenic fever in high-risk haematology patients. Cancer Imaging 2023; 23:119. [PMID: 38102639 PMCID: PMC10724891 DOI: 10.1186/s40644-023-00647-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 12/04/2023] [Indexed: 12/17/2023] Open
Abstract
BACKGROUND A recent randomised trial demonstrated [18F]fluorodeoxyglucose positron-emission tomography in combination with low-dose CT (FDG-PET/CT), compared to standard of care computed tomography (CT) imaging, positively impacted antimicrobial management and outcomes of acute leukaemia and haematopoietic stem cell transplant recipients with persistent and recurrent neutropenic fever. We conducted an economic evaluation from a healthcare perspective alongside the clinical trial. METHODS Unit costs in Australian dollars were applied to all resources used (antimicrobials, diagnostic tests, ICU and hospital bed days). Effectiveness was measured as number of patients with antimicrobial rationalisation, 6-month mortality and quality-adjusted life years (QALYs) derived from patient-reported trial-based health-related quality-of-life. Generalised linear models were used to analyse costs and outcomes. Incremental cost-effectiveness ratios (ICERs) for all outcomes and net monetary benefit (NMB) for QALYs were calculated. We performed bootstrapping with 1000 replications using the recycled predictions method. RESULTS The adjusted healthcare costs were lower for FDG-PET/CT (mean $49,563; 95%CI 36,867, 65,133) compared to CT (mean $57,574; 95% CI 44,837, 73,347). The difference in QALYs between the two groups was small (0.001; 95% CI -0.001, 0.004). When simulated 1000 times, FDG-PET/CT was the dominant strategy as it was cheaper with better outcomes than the standard CT group in 74% of simulations. The estimated NMBs at willingness-to-pay thresholds of $50,000 and $100,000 per QALY were positive, thus FDG-PET/CT remained cost-effective at these thresholds. CONCLUSIONS FDG-PET/CT is cost effective when compared to CT for investigation of persistent/recurrent neutropenic fever in high-risk patients, providing further support for incorporation of FDG-PET/CT into clinical guidelines and funding. TRIAL REGISTRATION This trial is registered with ClinicalTrials.gov, NCT03429387.
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Affiliation(s)
- Michelle Tew
- Health Economics Unit, Centre for Health Policy, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Australia.
| | - Abby P Douglas
- National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Australia
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Australia
- Department of Oncology, University of Melbourne, Melbourne, Australia
| | - Jeff Szer
- Department of Medicine, University of Melbourne, Melbourne, Australia
- Department of Clinical Haematology, Peter MacCallum Cancer Centre and the Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - Ashish Bajel
- Department of Oncology, University of Melbourne, Melbourne, Australia
- Department of Clinical Haematology, Peter MacCallum Cancer Centre and the Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - Simon J Harrison
- National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Australia
- Department of Oncology, University of Melbourne, Melbourne, Australia
- Department of Clinical Haematology, Peter MacCallum Cancer Centre and the Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - Shio Yen Tio
- National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Australia
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Australia
- Department of Oncology, University of Melbourne, Melbourne, Australia
| | - Leon J Worth
- National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Australia
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Australia
- Department of Oncology, University of Melbourne, Melbourne, Australia
- National Centre for Antimicrobial Stewardship, The Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | - Rodney J Hicks
- Department of Oncology, University of Melbourne, Melbourne, Australia
- Department of Medicine, University of Melbourne, Melbourne, Australia
| | - David Ritchie
- Department of Medicine, University of Melbourne, Melbourne, Australia
- Department of Clinical Haematology, Peter MacCallum Cancer Centre and the Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - Monica A Slavin
- National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Australia
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Australia
- Department of Health Services Research and Implementation Science, Peter MacCallum Cancer Centre, Melbourne, Australia
- Department of Oncology, University of Melbourne, Melbourne, Australia
- Victorian Infectious Diseases Service, Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - Karin A Thursky
- National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Australia
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Australia
- Department of Health Services Research and Implementation Science, Peter MacCallum Cancer Centre, Melbourne, Australia
- Department of Oncology, University of Melbourne, Melbourne, Australia
- National Centre for Antimicrobial Stewardship, The Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | - Kim Dalziel
- Health Economics Unit, Centre for Health Policy, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Australia
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Lewis RE, Stanzani M, Morana G, Sassi C. Radiology-based diagnosis of fungal pulmonary infections in high-risk hematology patients: are we making progress? Curr Opin Infect Dis 2023; 36:250-256. [PMID: 37431554 PMCID: PMC10351900 DOI: 10.1097/qco.0000000000000937] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
PURPOSE OF REVIEW In patients with hematological malignancies, high-resolution computed tomography (CT) is the recommended imaging approach for diagnosis, staging and monitoring of invasive fungal disease (IFD) but lacks specificity. We examined the status of current imaging modalities for IFD and possibilities for more effective applications of current technology for improving the specificity of IFD diagnosis. RECENT FINDINGS Although CT imaging recommendations for IFD are largely unchanged in the last 20 years, improvements in CT scanner technology and image processing algorithms now allow for technically adequate examinations at much lower radiation doses. CT pulmonary angiography can improve both the sensitivity and specificity of CT imaging for angioinvasive molds in both neutropenic and nonneutropenic patients, through detection of the vessel occlusion sign (VOS). MRI-based approaches also show promise not only for early detection of small nodules and alveolar hemorrhage but can also be used to detect pulmonary vascular occlusion without radiation and iodinated contrast media. 18F-fluorodeoxyglucose (FDG) PET/computed tomography (FDG-PET/CT) is increasingly used to monitor long-term treatment response for IFD, but could become a more powerful diagnostic tool with the development of fungal-specific antibody imaging tracers. SUMMARY High-risk hematology patients have a considerable medical need for more sensitive and specific imaging approaches for IFD. This need may be addressable, in part, by better exploiting recent progress in CT/MRI imaging technology and algorithms to improve the specificity of radiological diagnosis for IFD.
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Affiliation(s)
- Russell E Lewis
- Infectious Diseases, Department of Molecular Medicine, University of Padua, Gabelli, Padua
| | - Marta Stanzani
- Hematopoietic Stem Cell Transplantation and Cellular Therapy, Hematology Unit, Regional Hospital Ca’ Foncello, AULSS 2- Marca Trevigiana, Piazza Ospedale
| | - Giovanni Morana
- Department of Radiology, Regional Hospital Ca’ Foncello, AULSS 2- Marca Trevigiana. Piazza Ospedale 1, Treviso
| | - Claudia Sassi
- Pediatric and Adult CardioThoracic and Vascular, Oncohematologic and Emergency Radiology Unit, DIMEC-Dipartimento di Scienze Mediche e Chirurgiche, University of Bologna, IRCCS S. Orsola-Malpighi Hospital, Bologna, Italy
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Douglas A, Thursky K, Spelman T, Szer J, Bajel A, Harrison S, Tio SY, Bupha-Intr O, Tew M, Worth L, Teh B, Chee L, Ng A, Carney D, Khot A, Haeusler G, Yong M, Trubiano J, Chen S, Hicks R, Ritchie D, Slavin M. [18F]FDG-PET-CT compared with CT for persistent or recurrent neutropenic fever in high-risk patients (PIPPIN): a multicentre, open-label, phase 3, randomised, controlled trial. THE LANCET HAEMATOLOGY 2022; 9:e573-e584. [DOI: 10.1016/s2352-3026(22)00166-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 05/15/2022] [Accepted: 05/16/2022] [Indexed: 12/15/2022]
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Consensus guidelines and recommendations for infection prevention in multiple myeloma: a report from the International Myeloma Working Group. Lancet Haematol 2022; 9:e143-e161. [DOI: 10.1016/s2352-3026(21)00283-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 08/26/2021] [Accepted: 09/07/2021] [Indexed: 12/14/2022]
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Gompelman M, Tuinte R, Aarntzen E, Kouijzer I, van Leerdam E, Berrevoets M, Ten Oever J, Bleeker-Rovers C, Wanten G. The diagnostic value of [ 18F]FDG-PET/CT in detecting septic thrombosis in patients with central venous catheter-related Staphylococcus aureus bacteremia. Biomed Pharmacother 2021; 144:112296. [PMID: 34634557 DOI: 10.1016/j.biopha.2021.112296] [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: 08/12/2021] [Revised: 09/08/2021] [Accepted: 09/13/2021] [Indexed: 10/20/2022] Open
Abstract
PURPOSE Septic thrombosis often complicates Staphylococcus aureus bacteremia (SAB) in patients with a central venous catheter. Currently there is no reference standard for diagnosis. We describe the diagnostic value of [18F]FDG-PET/CT imaging in a patient cohort and the potential contribution of quantitative measurements in detecting septic thrombosis. METHODS We selected patients with catheter-related SAB from our institutional database (2013-2020). The contribution of [18F]FDG-PET/CT on clinical diagnosis of septic thrombosis was evaluated. Standardized Uptake Values (SUV) were measured and compared with a composite reference standard (clinical signs, initial [18F]FDG-PET/CT result, Multidisciplinary Team (MDT) meeting outcome) to identify a cut-off value for detecting septic thrombosis. RESULTS We identified 93 patients with a catheter-related SAB. Quantitative measurements were possible for 43/56 patients in whom a [18F]FDG-PET/CT scan was performed. Septic thrombosis was clinically diagnosed in 30% (13/43) of the cases. In 85% of these cases, significant [18F]FDG-PET/CT uptake at the site of the thrombus was the deciding factor for diagnosis of septic thrombosis during the MDT meeting. All mean SUV's of thrombotic lesions were higher in patients with clinically proven septic thrombosis compared to patients in whom this diagnosis was rejected (p < 0.001). A SUVpeak thrombus/SUVmean blood ratio of 1.6 (AUC-ROC value 0.982) as cut-off to differentiate between septic thrombosis and non-septic thrombosis had a sensitivity of 92% (95% CI 64-100) and specificity of 89% (95% CI 65-99). An algorithm was designed to guide diagnosis of septic thrombosis. CONCLUSION Quantitative [18F]FDG-PET/CT-derived parameters seem helpful to differentiate between septic and non-septic thrombosis in patients with catheter-related SAB.
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Affiliation(s)
- Michelle Gompelman
- Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands; Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands.
| | - Renée Tuinte
- Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Erik Aarntzen
- Department of Medical Imaging, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Ilse Kouijzer
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Eline van Leerdam
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Marvin Berrevoets
- Department of Internal Medicine, Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands
| | - Jaap Ten Oever
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Chantal Bleeker-Rovers
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Geert Wanten
- Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands
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Affiliation(s)
- Laila S Al Yazidi
- Child Health Department, Sultan Qaboos University Hospital, Muscat, Oman
| | - Abdullah M. S. Al-Hatmi
- Natural & Medical Sciences Research Center, University of Nizwa,Nizwa, Oman
- Department of Biological Sciences & Chemistry, College of Arts and Sciences, University of Nizwa, Nizwa, Oman
- Centre of Expertise in Mycology Radboudumc/CWZ, Nijmegen, The Netherlands
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8
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Longhitano A, Alipour R, Khot A, Bajel A, Antippa P, Slavin M, Thursky K. The role of 18F-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography (FDG PET/CT) in assessment of complex invasive fungal disease and opportunistic co-infections in patients with acute leukemia prior to allogeneic hematopoietic cell transplant. Transpl Infect Dis 2020; 23:e13547. [PMID: 33338319 DOI: 10.1111/tid.13547] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 12/03/2020] [Accepted: 12/06/2020] [Indexed: 12/20/2022]
Abstract
INTRODUCTION Individuals diagnosed with acute lymphoid and myeloid malignancies are at significant risk of invasive fungal and bacterial infections secondary to their marked immunocompromised states with a significant high risk of mortality. The role of metabolic imaging with 18F-Fluorodeoxyglucose (FDG) Positron Emission Tomography/Computed Tomography (PET/CT) has been increasingly recognized in optimizing the diagnosis of invasive infection, monitoring the response to therapy and guiding the duration of antimicrobial therapy or need to escalate to surgical intervention. METHODS Two distinct cases of pulmonary co-infection of rare fungal and bacterial pathogens are explored in severely immunocompromised individuals where FDG PET/CT aided both patients to make a full recovery and transition to HCT. The first case explores mixed Scedosporium apiospermum and Rhizomucor pulmonary infection on a background of T cell/myeloid mixed phenotype acute leukemia ultimately warranting long-term antifungal therapy and lobectomy prior to HCT. The second case explores Fusarium and Nocardia pulmonary infection on a background of relapsed AML also warranting surgical resection with lobectomy and long-term antimicrobials prior to transition to HCT. DISCUSSION The cases highlight the utility of FDG PET/CT to support the diagnosis of infections, including the presence or absence of disseminated infection, and to provide highly sensitive monitoring of the infection over time. FDG PET/CT played a key role in directing therapy duration decisions and prompted the necessity for surgical intervention. Ultimately, the use of FDG PET/CT allowed for a successful transition to HCT highlighting its value in this clinical setting. CONCLUSION FDG PET/CT has an emerging role in the diagnostic and monitoring pathway for complex infections in high-risk immunocompromised patients.
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Affiliation(s)
- Anthony Longhitano
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Vic., Australia
| | - Ramin Alipour
- Sir Peter MacCallum Department of Oncology, University of Melbourne Parkville, Melbourne, Vic., Australia.,Department of Molecular Imaging and Therapeutic Nuclear Medicine, Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Vic., Australia
| | - Amit Khot
- Clinical Haematology, Peter MacCallum Cancer Centre and Royal Melbourne Hospital, Melbourne, Vic., Australia
| | - Ashish Bajel
- Clinical Haematology, Peter MacCallum Cancer Centre and Royal Melbourne Hospital, Melbourne, Vic., Australia
| | - Phillip Antippa
- Department of Cardiothoracic Surgery, The Royal Melbourne Hospital, Melbourne, Vic., Australia.,Lung Cancer Service, Victorian Comprehensive Cancer Centre, Melbourne, Vic., Australia
| | - Monica Slavin
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Vic., Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne Parkville, Melbourne, Vic., Australia.,National Centre for Infection in Cancer, Peter MacCallum Cancer Centre, Melbourne, Vic., Australia
| | - Karin Thursky
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Vic., Australia.,National Centre for Antimicrobial Stewardship (NCAS), The Peter Doherty Institute for Infection and Immunity, Melbourne, Vic., Australia.,Department of Medicine, University of Melbourne, Parkville, Vic., Australia
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Abstract
Fever of unknown origin, bacteremia, and febrile neutropenia are diagnostic challenges. FDG-PET/CT is a well-established modality in infection imaging and the literature increasingly supports its use in these settings. In fever of unknown origin, FDG-PET/CT is helpful, but diagnostic yield depends on patient selection and inflammatory markers. In bacteremia, FDG-PET/CT is cost-effective, reduces morbidity and mortality, and impacts treatment strategy. Although use of FDG-PET/CT in these domains is not established as part of a definitive diagnostic strategy, FDG-PET/CT may help establish final diagnosis in a difficult population and should be considered early in the diagnostic process.
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Affiliation(s)
- Søren Hess
- Department of Radiology and Nuclear Medicine, Hospital of Southwest Jutland, Finsensgade 35, Esbjerg 6700, Denmark; Department of Regional Health Research, University of Southern Denmark, Odense, Denmark.
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Li Q, Ma J, Li H, Xu W, Cao Z, Liu S, Chen L, Gao S, Yan T, Li D, Wang X, Yue Y, Zhao Z, Wang X, Yang H, Zhao H, Yu Y, Zhang Y, Fan F, Wang Y. Correlation Between Uptake of 18F-FDG During PET/CT and Ki-67 Expression in Patients Newly Diagnosed With Multiple Myeloma Having Extramedullary Involvement. Technol Cancer Res Treat 2019; 18:1533033819849067. [PMID: 31092140 PMCID: PMC6535751 DOI: 10.1177/1533033819849067] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to evaluate the relationship of prognosis of patients with multiple myeloma having extramedullary involvement (EMM) with the 18F- fluorodeoxyglucose(18F-FDG) maximum standardized uptake value and the expression of Ki-67 in biopsy samples. Sixty-five patients were newly diagnosed with multiple myeloma presenting with EMM at our hospital from January 2005 to January 2015. Of these 65 patients, 20 were enrolled in this study. Over the last decade, both the maximum standardized uptake value and Ki-67 expression in these extramedullary lesions significantly correlated with progression-free survival, respectively (P= .039, P =.009). After combining—the maximum standardized uptake value and the Ki-67 expression as an integral—there was a significant correlation between both the overall survival (P = .027) and progression-free survival (P= .014). Patients have poor outcomes when EMM is detected at presentation. Both the maximum standardized uptake value and Ki-67 expression could aid in accurately evaluating EMM patient prognosis.
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Affiliation(s)
- Qian Li
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,2 Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin, China.,They are co-first authors and have contributed equally to this article
| | - Jing Ma
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,They are co-first authors and have contributed equally to this article
| | - Han Li
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Wengui Xu
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Zeng Cao
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Su Liu
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Lin Chen
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Shuang Gao
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Tinghui Yan
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Dongying Li
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Xue Wang
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Yuanfang Yue
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Zhigang Zhao
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Xiaofang Wang
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Hongliang Yang
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Haifeng Zhao
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Yong Yu
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Yizhuo Zhang
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Feiyue Fan
- 3 Institute of Laboratory Animal Sciences, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Yafei Wang
- 1 Department of Hematology and Blood and Marrow Transplantation, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer. Tianjin's Clinical Research Center for Cancer. Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
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Stanzani M, Sassi C, Battista G, Lewis RE. Beyond biomarkers: How enhanced CT imaging can improve the diagnostic-driven management of invasive mould disease. Med Mycol 2019; 57:S274-S286. [PMID: 31292659 DOI: 10.1093/mmy/myy125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 10/17/2018] [Accepted: 10/30/2018] [Indexed: 12/15/2022] Open
Abstract
CT imaging remains an essential diagnostic test for identification, staging and management of invasive mould infection (IMI) in patients with hematological malignancies. Yet the limited specificity of standard CT imaging can drive excessive antifungal use in patients, especially when more definitive diagnosis cannot be established through microbiology or invasive diagnostic procedures. CT pulmonary angiography (CTPA) is a complimentary, non-invasive approach to standard CT that allows for direct visualization of pulmonary arteries inside infiltrates for signs of angioinvasion, vessel destruction and vessel occlusion. Experience from several centers that are using CTPA as part of a standard diagnostic protocol for IMI suggests that a positive vessel occlusion sign (VOS) is the most sensitive and a specific sign of IMI in both neutropenic and non-neutropenic patients. CTPA is particularly useful in patients who develop suspected breakthrough IMI during antifungal prophylaxis because, unlike serum and/or BAL galactomannan and polymerase chain reaction (PCR) testing, the sensitivity is not reduced by antifungal therapy. A negative VOS may also largely rule-out the presence of IMI, supporting earlier discontinuation of empirical therapy. Future imaging protocols for IMI in patients with hematological malignancies will likely replace standard chest X-rays in favor of early low radiation dose CT exams for screening, with characterization of the lesions by CTPA and routine follow-up using functional/metabolic imaging such as 18F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (FDG-PET/CT) to assess treatment response. Hence, enhanced CT imaging techniques can improve the diagnostic-driven management of IMI management in high-risk patients with hematological malignancies.
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Affiliation(s)
- Marta Stanzani
- Institute of Hematology, "Lorenzo e Ariosto Seràgnoli" Department of Hematology and Clinical Oncology S'Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Claudia Sassi
- Division of Radiology, Department of Experimental and Diagnostic Medicine, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Giuseppe Battista
- Division of Radiology, Department of Experimental and Diagnostic Medicine, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Russell E Lewis
- Clinic of Infectious Diseases, Department of Medical and Surgical Sciences, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
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Sánchez-Montalvá A, Barios M, Salvador F, Villar A, Tórtola T, Molina-Morant D, Lorenzo-Bosquet C, Espinosa-Pereiro J, Molina I. Usefulness of FDG PET/CT in the management of tuberculosis. PLoS One 2019; 14:e0221516. [PMID: 31454368 PMCID: PMC6711521 DOI: 10.1371/journal.pone.0221516] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 08/08/2019] [Indexed: 11/18/2022] Open
Abstract
Background The aim of our study is to describe the FDG-PET/CT findings in patients with tuberculosis and to correlate them with the patient’s prognosis. Methods We retrospectively collected data from patients with tuberculosis, who had an FDG-PET/CT performed prior to treatment initiation from 2010 to 2015. Results Forty-seven out of 504 patients with active tuberculosis diagnosis (9.33%) underwent an FDG-PET/CT. The reasons for performing the FDG-PET/CT were: characterization of a pulmonary nodule (24; 51.1%), study of fever of unknown origin (12; 25.5%), study of lymph node enlargement (5; 10.6%) and others (6; 12.8%). Median age was 64 (IQR 50–74) years and 31 (66%) patients were male. Twenty-six (55.3%) patients had an immunosuppressant condition. According to the FDG-PET/CT, 48.6% of the patients had more than 1 organ affected and 46.8% had lymph node involvement. Median SUVmax of the main lesion was 5 (IQR 0.28–11.85). We found an association between the FDG accumulation and the size of the main lesion with a correlation coefficient of 0.54 (p<0.002). Patients with an unsuccessful outcome had a higher ratio SUVmax main lesion / SUVmean liver (1.92 vs 7.67, p<0.02). Conclusions In our cohort, almost half of the patients had more than 1 organ affected and 46.8% of them had lymph node involvement. FDG uptake was associated with the size of the main lesion and seems to be related to the treatment outcome. The extent of its potential to be used as an early predictor of treatment success still needs to be defined.
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Affiliation(s)
- Adrián Sánchez-Montalvá
- Infectious Diseases Department, Vall d’Hebron University Hospital, PROSICS Barcelona, Universitat Autònoma de Barcelona, Barcelona, Spain
- Grupo de Estudio de micobacterias (GEIM), Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC), Madrid, Spain
- * E-mail:
| | - Marta Barios
- Nuclear Medicine Department, Vall d’Hebron University Hospital, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Fernando Salvador
- Infectious Diseases Department, Vall d’Hebron University Hospital, PROSICS Barcelona, Universitat Autònoma de Barcelona, Barcelona, Spain
- Grupo de Estudio de micobacterias (GEIM), Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC), Madrid, Spain
| | - Ana Villar
- Pneumology Department, Vall d’Hebron University Hospital, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Teresa Tórtola
- Microbiology Department, Vall d’Hebron University Hospital, PROSICS Barcelona, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Daniel Molina-Morant
- Infectious Diseases Department, Vall d’Hebron University Hospital, PROSICS Barcelona, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Carles Lorenzo-Bosquet
- Nuclear Medicine Department, Vall d’Hebron University Hospital, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Juan Espinosa-Pereiro
- Infectious Diseases Department, Vall d’Hebron University Hospital, PROSICS Barcelona, Universitat Autònoma de Barcelona, Barcelona, Spain
- Grupo de Estudio de micobacterias (GEIM), Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC), Madrid, Spain
| | - Israel Molina
- Infectious Diseases Department, Vall d’Hebron University Hospital, PROSICS Barcelona, Universitat Autònoma de Barcelona, Barcelona, Spain
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Clark MS, Packard AT, Johnson DR, Johnson GB. Pitfalls of a Mixed Metabolic Response at PET/CT. Radiographics 2019; 39:1461-1475. [PMID: 31398089 DOI: 10.1148/rg.2019180093] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Although the term mixed metabolic response is commonly used in PET/CT reports, it should be a red flag to reconsider the assumptions made by the PET scan reader. Fluorine 18 fluorodeoxyglucose (FDG) PET/CT is recognized as an accurate imaging method for detecting response to cancer therapies. Critical clinical decisions regarding therapy are dependent on accurate interpretation of findings. The use of standardized terminology for response assessment, such as that in the Positron Emission Tomography Response Criteria in Solid Tumors (PERCIST), is highly recommended. With PERCIST, treatment response is categorized as complete metabolic response, partial metabolic response, stable metabolic disease, or progressive metabolic disease. Mixed metabolic response is not included in PERCIST. Rather, it is used colloquially to describe a scenario in which scanning performed after systemic cancer therapy reveals divergent findings, with some tumor foci responding and others not responding or even seen progressing. In PERCIST, mixed metabolic response should be described as stable metabolic disease or progressive metabolic disease. However, the PET/CT reader may also wish to suggest that individual tumors have heterogeneous genetic and/or other characteristics and consequently a mixed response to therapy. The concept of tumor heterogeneity is gaining momentum in cancer research and thus possibly leading to options for therapy targeted to oligometastases that are not responding. However, the authors suggest exercising extreme caution when PET/CT findings appear at first to reflect what some might call a mixed response. In addition, they have found that FDG PET/CT findings are often confounding owing to the simultaneous presence of two or more unrelated disease processes. Common examples include synchronous neoplasms, inflammatory processes, and treatment-related effects. Thus, an apparent mixed response is a red flag to reconsider whether all of the FDG-avid findings are actually metastases of the same cancer. Common mimics of a mixed metabolic response that do not represent true tumor heterogeneity are highlighted to improve the FDG PET/CT reader's recognition of these lesions.©RSNA, 2019.
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Affiliation(s)
- Michael S Clark
- From the Division of Nuclear Radiology, Department of Radiology, Mayo Clinic, 200 1st St SW, Rochester, MN 55902
| | - Ann T Packard
- From the Division of Nuclear Radiology, Department of Radiology, Mayo Clinic, 200 1st St SW, Rochester, MN 55902
| | - Derek R Johnson
- From the Division of Nuclear Radiology, Department of Radiology, Mayo Clinic, 200 1st St SW, Rochester, MN 55902
| | - Geoff B Johnson
- From the Division of Nuclear Radiology, Department of Radiology, Mayo Clinic, 200 1st St SW, Rochester, MN 55902
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Douglas AP, Thursky KA, Worth LJ, Drummond E, Hogg A, Hicks RJ, Slavin MA. FDG PET/CT imaging in detecting and guiding management of invasive fungal infections: a retrospective comparison to conventional CT imaging. Eur J Nucl Med Mol Imaging 2018; 46:166-173. [PMID: 29882160 DOI: 10.1007/s00259-018-4062-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 05/27/2018] [Indexed: 12/19/2022]
Abstract
PURPOSE Invasive fungal infections (IFIs) are common in immunocompromised patients. While early diagnosis can reduce otherwise high morbidity and mortality, conventional CT has suboptimal sensitivity and specificity. Small studies have suggested that the use of FDG PET/CT may improve the ability to detect IFI. The objective of this study was to describe the proven and probable IFIs detected on FDG PET/CT at our centre and compare the performance with that of CT for localization of infection, dissemination and response to therapy. METHODS FDG PET/CT reports for adults investigated at Peter MacCallum Cancer Centre were searched using keywords suggestive of fungal infection. Chart review was performed to describe the risk factors, type and location of IFIs, indication for FDG PET/CT, and comparison with CT for the detection of infection, and its dissemination and response to treatment. RESULTS Between 2007 and 2017, 45 patients had 48 proven/probable IFIs diagnosed prior to or following FDG PET/CT. Overall 96% had a known malignancy with 78% being haematological. FDG PET/CT located clinically occult infection or dissemination to another organ in 40% and 38% of IFI patients, respectively. Of 40 patients who had both FDG PET/CT and CT, sites of IFI dissemination were detected in 35% and 5%, respectively (p < 0.001). Of 18 patents who had both FDG PET/CT and CT follow-up imaging, there were discordant findings between the two imaging modalities in 11 (61%), in whom normalization of FDG avidity of a lesion suggested resolution of active infection despite a residual lesion on CT. CONCLUSION FDG PET/CT was able to localize clinically occult infection and dissemination and was particularly helpful in demonstrating response to antifungal therapy.
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Affiliation(s)
- A P Douglas
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, 305 Grattan St, Parkville, Melbourne, VIC, Australia. .,University of Melbourne, Melbourne, Australia. .,The National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Australia.
| | - K A Thursky
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, 305 Grattan St, Parkville, Melbourne, VIC, Australia.,University of Melbourne, Melbourne, Australia.,The National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Australia.,Victorian Infectious Diseases Service, The Peter Doherty Institute for Immunity and Infection, Royal Melbourne Hospital, Melbourne, Australia.,The National Centre for Antimicrobial Stewardship, Melbourne, Australia
| | - L J Worth
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, 305 Grattan St, Parkville, Melbourne, VIC, Australia.,University of Melbourne, Melbourne, Australia.,The National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Australia.,The National Centre for Antimicrobial Stewardship, Melbourne, Australia
| | - E Drummond
- Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - A Hogg
- Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - R J Hicks
- University of Melbourne, Melbourne, Australia.,Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - M A Slavin
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, 305 Grattan St, Parkville, Melbourne, VIC, Australia.,University of Melbourne, Melbourne, Australia.,The National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Australia.,Victorian Infectious Diseases Service, The Peter Doherty Institute for Immunity and Infection, Royal Melbourne Hospital, Melbourne, Australia
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What, where and why: exploring fluorodeoxyglucose-PET's ability to localise and differentiate infection from cancer. Curr Opin Infect Dis 2018; 30:552-564. [PMID: 28922285 DOI: 10.1097/qco.0000000000000405] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
PURPOSE OF REVIEW To review the utility of FDG-PET imaging in detecting the cause of fever and infection in patients with cancer. RECENT FINDINGS FDG-PET has been shown to have high sensitivity and accuracy for causes of neutropenic fever, leading to higher diagnostic certainty in this group. Recent advances in pathogen-specific labelling in PET to identify Aspergillus spp. and Yersinia spp. infections in mice, as well as differentiating between Gram-positive, Gram-negative and mycobacterial infections are promising. SUMMARY Patients with cancer are vulnerable to infection and fever, and the causes of these are frequently unclear using conventional diagnostic methods leading to high morbidity and mortality, length of stay and costs of care. FDG-PET/CT, with its unique complementary functional and anatomical information as well as its whole-body imaging capability, has demonstrated use in detecting occult infection in immunocompromised patients, including invasive fungal and occult bacterial infections, as well as defining extent of infection. By demonstrating disease resolution following treatment and allowing earlier cessation of therapy, FDG-PET acts as a key tool for antimicrobial and antifungal stewardship. Limitations include at times poor differentiation between infection, malignancy and sterile inflammation, however, exciting new technologies specific to infectious pathogens may help alleviate that issue. Further prospective randomised research is needed to explore these benefits in a nonbiased fashion.
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Ertay T, Sencan Eren M, Karaman M, Oktay G, Durak H. 18F-FDG-PET/CT in Initiation and Progression of Inflammation and Infection. Mol Imaging Radionucl Ther 2017; 26:47-52. [PMID: 28613196 PMCID: PMC5472086 DOI: 10.4274/mirt.18291] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Objective: Detection/localization of infection and inflammation is important for the initiation of correct treatment as well as its maintenance. Nuclear medicine imaging methods play an important role in determining infection and inflammation. 18F-2’-deoxy-2-fluoro-d-glucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) is highly sensitive in such cases when used with tomographic cross-sections. In this study, the development and progression of infection and inflammation were monitored on rats by using 18F-FDG via PET/CT. Methods: Sterile and infected abscesses were formed on rats using turpentine and S. aureus, respectively. For evaluation of the formation and progression of the abscess, 18F-FDG was injected into the rats and they were imaged by PET/CT at intervals of twenty-four hours for five days. Maximum standard uptake value (SUVmax) of 18F-FDG was calculated. Results: The highest activity involvement was seen on the first day of abscess formation. On the first day, SUVmax of the S. aureus abscess was 3.9±0.9 while in the sterile abscess SUVmax in the first day was 2.2±0.8. 18F-FDG uptake decreased day by day and it reached the background level on the fourth and fifth days. There were statistically significant differences between S. aureus and sterile abscess, and between sterile abscess and background activity in terms of SUVmax values during the first three days (p<0.05). On the fourth and fifth days, there was no statistically significant difference between S. aureus and sterile abscess, and between sterile abscess and background activity (p>0.05). Conclusion: The results demonstrated that the SUVmax value for 18F-FDG can be useful in the early differentiation of sterile and infected abscess. In addition, 18F-FDG-PET imaging has the advantage of local availability of equipment and labeled agents leading rapid diagnosis of differentiation of infection and inflammation.
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Affiliation(s)
- Türkan Ertay
- Dokuz Eylül University Faculty of Medicine, Department of Nuclear Medicine, İzmir, Turkey
| | - Mine Sencan Eren
- Dokuz Eylül University Faculty of Medicine, Department of Nuclear Medicine, İzmir, Turkey
| | - Meral Karaman
- Dokuz Eylül University Faculty of Medicine, Department of Clinical Microbiology, İzmir, Turkey
| | - Gülgün Oktay
- Dokuz Eylül University Faculty of Medicine, Department of Clinical Biochemistry, İzmir, Turkey
| | - Hatice Durak
- Dokuz Eylül University Faculty of Medicine, Department of Nuclear Medicine, İzmir, Turkey
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Abstract
Bacterial pneumonias exact unacceptable morbidity on patients with cancer. Although the risk is often most pronounced among patients with treatment-induced cytopenias, the numerous contributors to life-threatening pneumonias in cancer populations range from derangements of lung architecture and swallow function to complex immune defects associated with cytotoxic therapies and graft-versus-host disease. These structural and immunologic abnormalities often make the diagnosis of pneumonia challenging in patients with cancer and impact the composition and duration of therapy. This article addresses host factors that contribute to pneumonia susceptibility, summarizes diagnostic recommendations, and reviews current guidelines for management of bacterial pneumonia in patients with cancer.
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Affiliation(s)
- Justin L Wong
- Division of Internal Medicine, Department of Pulmonary, Critical Care and Sleep Medicine, The University of Texas Health Sciences Center, 6431 Fannin Street, MSB 1.434, Houston, TX 77030, USA
| | - Scott E Evans
- Division of Internal Medicine, Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1100, Houston, TX 77030, USA.
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The role of 68Ga-DOTA-TATE PET/CT scanning in the evaluation of patients with multiple myeloma. Nucl Med Commun 2017; 38:76-83. [DOI: 10.1097/mnm.0000000000000610] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Nayak MK, Singh N. Endogenous Panophthalmitis in a case of Multiple Myeloma and Diabetes Mellitus. J Clin Diagn Res 2016; 10:ND03-4. [PMID: 27630876 DOI: 10.7860/jcdr/2016/18699.8164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 03/14/2016] [Indexed: 11/24/2022]
Abstract
Multiple myeloma cripples the human body in many ways, one of them being decreased immunity. Infections occurring spontaneously can increase the morbidity. We report a case of an elderly lady with multiple myeloma on treatment and uncontrolled diabetes, who developed loss of vision, swelling and redness of left eye of 4 days duration. There was no history of injury or entry of a foreign body. She also had left arm cellulitis. Ocular examination revealed visual acuity of 6/36 in right eye and no perception of light in left eye. Anterior segment of the right eye was insignificant while the left eye showed features suggestive of panophthalmitis. B scan revealed choroidal detachment and confirmed panophthalmitis. She underwent evisceration of the left eye. The cause of spontaneous infections is an immunocompromised state due to multiple myeloma and uncontrolled diabetes. This case report highlights the propensity of multiple myeloma to cause infections of the eye debilitating enough to cause severe visual morbidity.
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Affiliation(s)
- Madhurima K Nayak
- Senior Resident, Department of Ophthalmology, Kasturba Medical College, Manipal University , Mangalore, Karnataka, India
| | - Neha Singh
- Resident, Department of Ophthalmology, Kasturba Medical College, Manipal University , Mangalore, Karnataka, India
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Rubini G, Niccoli-Asabella A, Ferrari C, Racanelli V, Maggialetti N, Dammacco F. Myeloma bone and extra-medullary disease: Role of PET/CT and other whole-body imaging techniques. Crit Rev Oncol Hematol 2016; 101:169-83. [DOI: 10.1016/j.critrevonc.2016.03.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 02/08/2016] [Accepted: 03/03/2016] [Indexed: 01/08/2023] Open
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Improved Radiographic Imaging of Invasive Fungal Disease: The Cornerstone to Antifungal Stewardship in the Hematology Units? CURRENT FUNGAL INFECTION REPORTS 2016. [DOI: 10.1007/s12281-016-0258-1] [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]
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Spectrum of Physiologic and Pathologic Skeletal Muscle18F-FDG Uptake on PET/CT. AJR Am J Roentgenol 2015; 205:W141-9. [DOI: 10.2214/ajr.14.13457] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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How we treat invasive fungal diseases in patients with acute leukemia: the importance of an individualized approach. Blood 2014; 124:3858-69. [DOI: 10.1182/blood-2014-04-516211] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
AbstractInvasive fungal diseases (IFDs) represent an important cause of treatment failure in adults with acute leukemia. Because of leukemia’s heterogeneity, the risk for IFDs is highly variable. We therefore apply a risk-adapted antifungal strategy with strong emphasis on pretreatment and day-15 posttreatment to allow earlier and more individualized interventions. We determine pretreatment risks for IFDs based on 4 factors: (1) host fitness for standard therapy (ie, fit, unfit, or frail); (2) leukemia resistance (high vs low probability of achieving complete remission [CR]); (3) anticipated treatment-related toxicity such as neutropenia, mucositis, and steroid-induced immunosuppression; and (4) patient exposure to opportunistic fungi. Accordingly, we stratify patients as high, intermediate, or low risk for IFDs and apply risk-adapted antifungal strategies, including primary or secondary prophylaxis and diagnostic-based preemptive or empiric therapy. Prevention of IFDs also relies on optimizing organ function, decreasing exposure to opportunistic fungi, and improving net state of immunosuppression with use of better-tolerated and investigational agents for unfit patients and those with adverse leukemia biology. Novel targeted and safe therapies that can achieve higher rates of sustained CR among patients with adverse genetics offer the best promise for reducing the burden of IFDs in these patients.
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Comparison of (11)C-4'-thiothymidine, (11)C-methionine, and (18)F-FDG PET/CT for the detection of active lesions of multiple myeloma. Ann Nucl Med 2014; 29:224-32. [PMID: 25421383 PMCID: PMC4385147 DOI: 10.1007/s12149-014-0931-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 11/11/2014] [Indexed: 01/08/2023]
Abstract
Purpose The aims of this study were to evaluate the possibility of using 11C-methionine (11C-MET) and 11C-4′-thiothymidine (11C-4DST) whole-body PET/CT for the imaging of amino acid metabolism and DNA synthesis, respectively, when searching for bone marrow involvement in patients with multiple myeloma (MM) and to compare these findings with those for 18F-FDG PET/CT and aspiration cytology. Methods A total of 64 patients with MM, solitary plasmacytoma, monoclonal gammopathy of undetermined significance, or an unspecified diagnosis were prospectively enrolled. All the patients underwent three whole-body PET/CT examinations within a period of 1 week. First, the tracer accumulation was visually evaluated as positive, equivocal, or negative for 55 focal lytic lesions visualized using CT in 24 patients. Second, the percentages of marrow plasma cells as calculated using a bone marrow aspiration smear and tracer accumulation were evaluated in the posterior iliac crests of 36 patients. Results Among the 55 lytic lesions, the 11C-MET and 11C-4DST findings tended to reveal more positive findings than the 18F-FDG findings. Based on the standard criteria for the diagnosis of active myeloma using the percentage of marrow plasma cells, significant differences were found between the 18F-FDG and 11C-MET findings and between the 18F-FDG and 11C-4DST findings, but no significant difference was observed between the 11C-MET and 11C-4DST findings. Conclusion The addition of 11C-MET and 11C-4DST to 18F-FDG when performing PET/CT enabled clearer evaluations of equivocal lesions. Based on cytological diagnostic criteria, 11C-MET and 11C-4DST were more sensitive than 18F-FDG for the detection of active lesions. 11C-MET and 11C-4DST were more useful than 18F-FDG for the detection of active lesions, especially during the early stage of disease.
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Averill LW, Acikgoz G, Miller RE, Kandula VVR, Epelman M. Update on pediatric leukemia and lymphoma imaging. Semin Ultrasound CT MR 2014; 34:578-99. [PMID: 24332209 DOI: 10.1053/j.sult.2013.05.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Together, leukemia and lymphoma account for half of all childhood malignancies. Leukemia and lymphoma arise from similar cell lines and can have overlapping imaging features; however, the clinical presentation, imaging strategies, and treatment protocols can vary substantially based on the specific subtype. Although imaging does not play a central role in staging or monitoring disease in childhood leukemia, findings on imaging may be the first indication of the diagnosis. Advanced imaging, especially positron emission tomography/computed tomography, has moved to the forefront of staging and treatment response evaluation in Hodgkin's disease and non-Hodgkin's lymphoma. Imaging also plays a key role in evaluating the myriad of treatment complications that are commonly seen with chemotherapy and associated neutropenia. Future efforts will be largely focused on decreasing radiation exposure to these children, utilizing reduced or radiation-free modalities, such as positron emission tomography/magnetic resonance and diffusion-weighted whole-body imaging with background suppression, as well as refining surveillance imaging strategies. The purpose of this article is to briefly review the classification of pediatric leukemia and lymphoma, illustrate common imaging findings at presentation throughout the body, describe staging and therapeutic response evaluation, and show a spectrum of commonly encountered complications of treatment.
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Affiliation(s)
- Lauren W Averill
- Medical Imaging, Nemours/A.I. duPont Hospital for Children, Wilmington, DE.
| | - Gunsel Acikgoz
- Medical Imaging, Nemours/A.I. duPont Hospital for Children, Wilmington, DE
| | - Robin E Miller
- Nemours Center for Cancer and Blood Disorders, Nemours/A.I. duPont Hospital for Children, Wilmington, DE
| | - Vinay V R Kandula
- Medical Imaging, Nemours/A.I. duPont Hospital for Children, Wilmington, DE
| | - Monica Epelman
- Department of Medical Imaging, Nemours Children's Hospital, Orlando, FL
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Blokhuis GJ, Bleeker-Rovers CP, Diender MG, Oyen WJG, Draaisma JMT, de Geus-Oei LF. Diagnostic value of FDG-PET/(CT) in children with fever of unknown origin and unexplained fever during immune suppression. Eur J Nucl Med Mol Imaging 2014; 41:1916-23. [PMID: 24869631 DOI: 10.1007/s00259-014-2801-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2013] [Accepted: 05/05/2014] [Indexed: 01/14/2023]
Abstract
PURPOSE Fever of unknown origin (FUO) and unexplained fever during immune suppression in children are challenging medical problems. The aim of this study is to investigate the diagnostic value of fluorine-18 fluorodeoxyglucose positron emission tomography (FDG-PET) and FDG-PET combined with computed tomography (FDG-PET/CT) in children with FUO and in children with unexplained fever during immune suppression. METHODS All FDG-PET/(CT) scans performed in the Radboud university medical center for the evaluation of FUO or unexplained fever during immune suppression in the last 10 years were reviewed. Results were compared with the final clinical diagnosis. RESULTS FDG-PET/(CT) scans were performed in 31 children with FUO. A final diagnosis was established in 16 cases (52 %). Of the total number of scans, 32 % were clinically helpful. The sensitivity and specificity of FDG-PET/CT in these patients was 80 % and 78 %, respectively. FDG-PET/(CT) scans were performed in 12 children with unexplained fever during immune suppression. A final diagnosis was established in nine patients (75 %). Of the total number of these scans, 58 % were clinically helpful. The sensitivity and specificity of FDG-PET/CT in children with unexplained fever during immune suppression was 78 % and 67 %, respectively. CONCLUSIONS FDG-PET/CT appears a valuable imaging technique in the evaluation of children with FUO and in the diagnostic process of children with unexplained fever during immune suppression. Prospective studies of FDG-PET/CT as part of a structured diagnostic protocol are warranted to assess the additional diagnostic value.
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Affiliation(s)
- Gijsbert J Blokhuis
- Department of Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
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Abstract
The intersection and syndemic interaction between the human immunodeficiency virus (HIV) and tuberculosis (TB) epidemics have global prevalence with devastating morbidity and massive mortality. Using FDG-PET imaging it was shown that in HIV-infected individuals, involvement of the head and neck precedes that of the chest and of the abdomen. The sequence of lymph node involvement observed suggests the existence of a diffusible activation mediator that may be targeted via therapeutic intervention strategies. Furthermore, the degree of FDG uptake proved directly related to viral load and inversely related to CD4 cell count. Available data in acquired immune deficiency syndrome (AIDS)-defining cancers further suggest that FDG-PET/CT imaging may be useful for prognostication of cervical cancer and for identifying appropriate sites for biopsy, staging, and monitoring lymphoproliferative activity owing to HIV-associated Kaposi sarcoma and multicentric Castleman disease. Inversely, in HIV-associated lymphoma, FDG uptake in HIV-involved lymphoid tissue was shown to reduce the specificity of FDG-PET imaging findings, the effect of which in clinical practice warrants further investigation. In the latter setting, knowledge of viremia appears to be essential for FDG-PET image interpretation. Early HIV-associated neurocognitive disorder, formerly known as AIDS dementia complex, proved to be characterized by striatal hypermetabolism and progressive HIV-associated neurocognitive disorder or AIDS dementia complex by a decrease in subcortical and cortical metabolism. In lipodystrophic HIV-infected individuals, lipodystrophy proved associated with increased glucose uptake by adipose tissue, likely resulting from the metabolic stress of adipose tissue in response to highly active antiretroviral therapy. Furthermore, ongoing chronic low-grade infection in arteries of HIV-infected individuals could be depicted by FDG-PET/CT imaging. And there is promising data that FDG-PET/CT in HIV may serve as a new marker for the evaluation of thymic function in HIV-infected patients. In the setting of TB, FDG-PET has proven unable to differentiate malignancy from TB in patients presenting with solitary pulmonary nodules, including those suffering from HIV, and thus cannot be used as a tool to reduce futile biopsy or thoracotomy in these patients. In patients presenting with extrapulmonary TB, FDG-PET imaging was found to be significantly more efficient when compared with CT for the identification of more sites of involvement. Thus supporting that FDG-PET/CT can demonstrate lesion extent, serve as guide for biopsy with aspiration for culture, assist surgery planning and contribute to follow-up. Limited available data suggest that quantitative FDG-PET findings may allow for prediction or rapid assessment, at 4 months following treatment instigation, of response to antituberculostatics in TB-infected HIV patients. These results and more recent findings suggest a role for FDG-PET/CT imaging in the evaluation of therapeutic response in TB patients.
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Affiliation(s)
- Mike Sathekge
- Department of Nuclear Medicine, University of Pretoria, Pretoria, South Africa.
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Belcher R, Boyette J, Pierson T, Siegel E, Bartel TB, Aniasse E, Stack B. What is the role of positron emission tomography in osteonecrosis of the jaws? J Oral Maxillofac Surg 2013; 72:306-10. [PMID: 24075237 DOI: 10.1016/j.joms.2013.07.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 07/31/2013] [Accepted: 07/31/2013] [Indexed: 11/17/2022]
Abstract
PURPOSE Bisphosphonate-related osteonecrosis of the jaw (BP-ONJ) has become an associated side effect of BP therapy and several imaging modalities have been studied to show an ability to detect clinical disease. Because most patients at the authors' university hospital who develop BP-ONJ also undergo concurrent positron emission tomographic (PET) scanning, the authors investigated the utility of PET scans for diagnosis of BP-ONJ. PATIENTS AND METHODS A retrospective chart review was performed of patients whose PET scans were acquired within 1 year of their BP-ONJ diagnosis (1998 through 2006). BP-ONJ was defined as intraoral exposure of the maxilla or mandible in patients on BPs and not given radiation to that area. This was performed at a university hospital with oncologic patients treated with BPs. All PET scans in this study were secondarily reviewed by a single expert reader for internal consistency (T.B.B.). A detailed timeline of the course of BP-ONJ was constructed by the review of medical records for each patient and the relation of each patient's PET scan results to that patient's BP-ONJ disease was evaluated. Data analysis was a descriptive analysis of PET scan findings in this patient population. RESULTS Of the 25 patients studied, 5 were excluded for insufficient clinical or radiologic data. Of the 20 remaining patients (16 male, 4 female), 46 PET scans were performed and showed 53 areas of enhancement. Many patients had multiple PET scans performed while experiencing exposed bone, and 5 of these patients had alternating positive and negative scans with exposed bone, resulting in 13 patients with positive enhancement on a scan with exposed bone and 9 patients with no enhancement on a scan with exposed bone. Of the 13 patients with PET enhancement, 4 had signs of clinical infection documented at the time of examination. Sensitivity, specificity, and accuracy of PET scanning for BP-ONJ were 43%, 19%, and 62%, respectively. There were 7 patients with PET scans performed after clinical resolution of their exposed bone and 6 of those had no enhancement. CONCLUSION The purpose of this study was to report findings on PET scanning for patients with BP-ONJ. Although PET scans are useful in oncology, the present findings do not support their routine use for exclusively diagnosing or following cases of BP-ONJ.
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Affiliation(s)
- Ryan Belcher
- Medical Student, University of Arkansas College of Medicine, Little Rock, AR
| | - Jennings Boyette
- Assistant Professor, Department of Otolaryngology-Head and Neck Surgery, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Tiffany Pierson
- Medical Student, University of Arkansas College of Medicine, Little Rock, AR
| | - Eric Siegel
- Consultant, Department of Biostatistics, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Twyla B Bartel
- Resident, Department of Radiology, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Elias Aniasse
- Professor, University of Cincinnati Cancer Institute, Cincinnati, OH
| | - Brendan Stack
- Professor, Department of Otolaryngology-Head and Neck Surgery, University of Arkansas for Medical Sciences; University of Arkansas College of Medicine, Little Rock, AR.
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Vos FJ, Bleeker-Rovers CP, Oyen WJ. The Use of FDG-PET/CT in Patients With Febrile Neutropenia. Semin Nucl Med 2013; 43:340-8. [DOI: 10.1053/j.semnuclmed.2013.04.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Peterson KL, Reid WC, Freeman AF, Holland SM, Pettigrew RI, Gharib AM, Hammoud DA. The use of 14C-FIAU to predict bacterial thymidine kinase presence: implications for radiolabeled FIAU bacterial imaging. Nucl Med Biol 2013; 40:638-42. [PMID: 23541824 PMCID: PMC3665620 DOI: 10.1016/j.nucmedbio.2013.01.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Accepted: 01/23/2013] [Indexed: 10/27/2022]
Abstract
UNLABELLED Currently available infectious disease imaging techniques cannot differentiate between infection and sterile inflammation or between different types of infections. Recently, radiolabeled FIAU was found to be a substrate for the thymidine kinase (TK) enzyme of multiple pathogenic bacteria, leading to its translational use in the imaging of bacterial infections. Patients with immunodeficiencies, however, are susceptible to a different group of pathogenic bacteria when compared to immunocompetent subjects. In this study, we wanted to predict the usefulness of radiolabeled FIAU in the detection of bacterial infections commonly occurring in patients with immunodeficiencies, in vitro, prior to attempting in vivo imaging with (124)I-FIAU-PET. METHODS We obtained representative strains of bacterial pathogens isolated from actual patients with genetic immunodeficiencies. We evaluated the bacterial susceptibility of different strains to the effect of incubation with FIAU, which would implicate the presence of the thymidine kinase (TK) enzyme. We also incubated the bacteria with (14)C-FIAU and consequently measured its rate of incorporation in the bacterial DNA using a liquid scintillation counter. RESULTS Unlike the other bacterial strains, the growth of Pseudomonas aeruginosa was not halted by FIAU at any concentration. All the tested clinical isolates demonstrated different levels of (14)C-FIAU uptake, except for P. aeruginosa. CONCLUSION Radiolabeled FIAU has been successful in delineating bacterial infections, both in preclinical and pilot translational studies. In patients with immunodeficiencies, Pseudomonas infections are commonly encountered and are usually difficult to differentiate from fungal infections. The use of radiolabeled FIAU for in vivo imaging of those patients, however, would not be useful, considering the apparent lack of TK enzyme in Pseudomonas. One has to keep in mind that not all pathogenic bacteria possess the TK enzyme and as such will not all retain FIAU. Our technique is simple, and can be easily used to assess whether a certain bacterial strain of interest can or cannot be visualized using radiolabeled FIAU.
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Affiliation(s)
- Kristin L Peterson
- Center for Infectious Disease Imaging, Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, Bethesda, MD 20814-9692, USA
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Infectious and inflammatory complications of surgical management of cancer patients imaged with 18F-FDG PET/CT: a pictorial essay. Clin Imaging 2013; 37:669-79. [PMID: 23540832 DOI: 10.1016/j.clinimag.2013.02.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Revised: 01/19/2013] [Accepted: 02/13/2013] [Indexed: 11/20/2022]
Abstract
The aim of this pictorial essay was to highlight the usefulness of fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) in evaluating incidental infection or inflammation in cancer patients, related to surgical management. A retrospective review of 10,985 consecutive oncologic PET/CTs was done, and nine cases with suspected FDG positive infectious or inflammatory processes were selected for further review. PET/CT helped identify infections and inflammatory processes related to surgical management of cancer patients, define the extent of infection or inflammation, guide the management and, in some cases, evaluate response to therapy.
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Differentiation of incidental intestinal activities at PET/CT examinations with a new sign: Peristaltic segment sign. Rev Esp Med Nucl Imagen Mol 2013. [DOI: 10.1016/j.remnie.2013.01.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Nononcological Applications of Positron Emission Tomography for Evaluation of the Thorax. J Thorac Imaging 2013; 28:25-39. [DOI: 10.1097/rti.0b013e31827882a9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Isoda A, Higuchi T, Nakano S, Arisaka Y, Kaira K, Kamio T, Mawatari M, Matsumoto M, Sawamura M, Tsushima Y. ¹⁸F-FAMT in patients with multiple myeloma: clinical utility compared to ¹⁸F-FDG. Ann Nucl Med 2012; 26:811-6. [PMID: 22903817 DOI: 10.1007/s12149-012-0645-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Accepted: 07/29/2012] [Indexed: 12/28/2022]
Abstract
OBJECTIVE L-[3-(18)F]-alpha-methyltyrosine ((18)F-FAMT) is an amino-acid tracer for positron emission tomography (PET), with uptake related to overexpression of L-type amino-acid transporter 1 and proliferative activity in tumour cells. This study evaluated the diagnostic performance of (18)F-FAMT PET compared with 2-[(18)F]-fluoro-2-deoxy-D-glucose ((18)F-FDG) PET in patients with multiple myeloma (MM). METHODS Eleven patients with MM (newly diagnosed, n = 3; relapsed after treatment, n = 8) underwent whole-body (18)F-FAMT and (18)F-FDG PET within a 2-week interval. Magnetic resonance imaging (MRI) of the spine was also performed to assess patterns of bone marrow infiltration. Tracer uptake was semi-quantitatively evaluated using maximal standardized uptake value (SUV(max)). Mean SUV was also determined for normal bone marrow and the aortic arch as mediastinal background SUV to calculate lesion-to-bone marrow (L/B) and lesion-to-mediastinum (L/M) ratios, respectively. Those values were statistically compared using Student's t test. RESULTS In 8 patients showing focal infiltration on MRI, 34 FDG-avid bone lesions were identified, with each showing increased FAMT uptake. Mean SUV(max) and L/B ratio of FDG (3.1 ± 1.2 and 3.3 ± 1.9, respectively) were significantly higher than those of FAMT (2.0 ± 1.0 and 2.6 ± 1.1, respectively; p < 0.05 each). In contrast, the L/M ratio of FDG showed no significant difference to that of FAMT (2.2 ± 1.0 and 2.4 ± 1.2, respectively; p = 0.3). CONCLUSIONS Clear (18)F-FAMT PET uptake was seen in most (18)F-FDG-avid lesions among patients with MM, and an equivalent semi-quantitative value was obtained using L/M ratio. Our preliminary data suggest that (18)F-FAMT PET provides a useful imaging modality for detecting active myelomatous lesions.
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Affiliation(s)
- Atsushi Isoda
- Department of Hematology, National Hospital Organization Nishigunma National Hospital, 2854, Kanai, Shibukawa, Gunma 377-8511, Japan.
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Zamagni E, Cavo M. The role of imaging techniques in the management of multiple myeloma. Br J Haematol 2012; 159:499-513. [PMID: 22881361 DOI: 10.1111/bjh.12007] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Bone disease is the major feature of multiple myeloma (MM). Imaging is required for correct staging, in the follow-up after treatment and, as recently highlighted, is predictor of prognosis. In the near future, whole-body X-Ray may be replaced by more sensitive techniques, such as whole-body low-dose computerized tomography (CT). Magnetic resonance imaging (MRI) is the gold standard method for assessing bone marrow infiltration of the spine, predicting the risk of vertebral fracture and distinguishing between benign and malignant osteoporosis. Positron emission tomography (PET) with CT (PET/CT) provides important information about the extent of whole-body disease, including soft tissue masses, and is the best tool to distinguish between active or inactive disease after therapy. Both MRI and PET/CT are predictors of clinical outcome. A prospective use of these newer imaging techniques in both clinical trials and clinical practice may help optimize MM management in the near future.
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Affiliation(s)
- Elena Zamagni
- Seràgnoli Institute of Haematology, Bologna University School of Medicine, Bologna, Italy.
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Yildirim D, Tamam MO, Sahin M, Ekci B, Gurses B. Differentiation of incidental intestinal activities at PET/CT examinations with a new sign: peristaltic segment sign. Rev Esp Med Nucl Imagen Mol 2012; 32:86-91. [PMID: 22743109 DOI: 10.1016/j.remn.2012.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Revised: 05/03/2012] [Accepted: 05/07/2012] [Indexed: 11/19/2022]
Abstract
PURPOSE The aim of this study was to present the effect of the peristaltic segment sign for the differential diagnosis between malignant, physiological and gastrointestinal focal fluorodeoxyglucose (FDG) uptakes as an alternative method to maximum standardized uptake value (SUVmax). MATERIALS AND METHODS Gastrointestinal tract (GIT) sections of 823 FDG positron emission tomography/computed tomography (FDG-PET/CT) performed in our center were reviewed retrospectively. Images of these cases that have been reported for positive intestinal focal FDG uptake areas were included. Through the sectional images, any accompanying short segment expanded with air just after or before the uptake area was marked as "positive peristaltism sign". The cases were confirmed with endoscopy plus biopsy (n:42), endoscopy (n:5), laparotomy (n:1), transabdominal biopsy (n:1), enteroclysis (n:1), CT-colonoscopy (n:5), rectal contrast enhanced CT (n:4). Distinguishing features of the sign were analyzed statistically compared to the conventional method for differentiation of malignity. RESULTS Localized FDG uptake was reported in 59 of 823 cases. A SUVmax greater than 2.5 with intestinal wall thickening allowed the diagnosis of malignity with sensitivity 33%, specificity 65%, positive predictive value 69% and negative predictive value 46%. The peristaltic segment sign, considered as a benign finding, increased the statistical values to 68%, 80%, 82% and 65%, respectively. CONCLUSION In case of gastrointestinal increased focal FDG uptake, the new parameter of peristaltic segment sign may differentiate the physiologic uptakes from the malignant ones more accurately than the conventional SUVmax.
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Affiliation(s)
- Duzgun Yildirim
- Kasimpasa Military Hospital, Department of Radiology, Istanbul, Turkey
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40
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Walker RC, Brown TL, Jones-Jackson LB, De Blanche L, Bartel T. Imaging of Multiple Myeloma and Related Plasma Cell Dyscrasias. J Nucl Med 2012; 53:1091-101. [DOI: 10.2967/jnumed.111.098830] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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41
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Use of FDG PET/CT for investigation of febrile neutropenia: evaluation in high-risk cancer patients. Eur J Nucl Med Mol Imaging 2012; 39:1348-55. [DOI: 10.1007/s00259-012-2143-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Accepted: 04/23/2012] [Indexed: 10/28/2022]
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42
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Koh KC, Slavin MA, Thursky KA, Lau E, Hicks RJ, Drummond E, Wong PS, Worth LJ. Impact of fluorine-18 fluorodeoxyglucose positron emission tomography on diagnosis and antimicrobial utilization in patients with high-risk febrile neutropenia. Leuk Lymphoma 2012; 53:1889-95. [PMID: 22448920 DOI: 10.3109/10428194.2012.677533] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Early and targeted antimicrobial therapy improves outcomes in patients with febrile neutropenia (FN). We evaluated the impact of fluorine-18 fluorodeoxyglucose positron emission tomography (FDG-PET) on antimicrobial utilization in the management of FN. A cohort of patients with FN and hematological malignancy was identified. Cases (in whom FDG-PET was performed, n = 37) were compared with controls (in whom conventional investigations excluding FDG-PET were performed, n = 76). An underlying cause for FN was determined in 94.6% of cases, compared to 69.7% of controls. FDG-PET had a significant impact on antimicrobial utilization compared to conventional imaging (35.1% vs. 11.8%; p = 0.003), and was associated with shorter duration of liposomal amphotericin-B therapy for systemic fungal infection (median 4.0 days cases vs. 10.0 days controls; p = 0.001). Cases had a longer length of hospitalization (p = 0.016). In the management of patients with high-risk FN, FDG-PET improves diagnostic yield and allows rationalization of antifungal therapy. The impact upon healthcare costs associated with antimicrobial therapy for FN requires further evaluation.
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Affiliation(s)
- Kwee Choy Koh
- Department of Internal Medicine, International Medical University, Seremban, Negeri Sembilan, Malaysia.
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Xu B, Liu Y, Codreanu I. Utilization of FDG PET/CT in the Management of Inflammation and Infection in Patients with Malignancies. PET Clin 2012; 7:211-8. [DOI: 10.1016/j.cpet.2012.01.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Haroon A, Zumla A, Bomanji J. Role of Fluorine 18 Fluorodeoxyglucose Positron Emission Tomography-Computed Tomography in Focal and Generalized Infectious and Inflammatory Disorders. Clin Infect Dis 2012; 54:1333-41. [DOI: 10.1093/cid/cis193] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
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46
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Wong PS, Lau WFE, Worth LJ, Thursky KA, Drummond E, Slavin MA, Hicks RJ. Clinically important detection of infection as an ‘incidental’ finding during cancer staging using FDG-PET/CT. Intern Med J 2012; 42:176-83. [DOI: 10.1111/j.1445-5994.2011.02450.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Szucs B, Nagy E, Talev S, Garai I, Galuska L. [The role of FDG PET/CT for detecting the cause of fever of unknown origin in a clinical case]. Orv Hetil 2012; 153:227-31. [PMID: 22296927 DOI: 10.1556/oh.2012.29296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The fever of unknown origin from time to time constitutes a serious clinical problem and nearly all diagnostic methods are involved to discover urgently its cause. According to literature data (18)F-fluoro-deoxyglucose PET/CT was successful in 25-70% of cases even in patients without any positive findings with conventional diagnostic techniques. The Hungarian National Health Fund does not include fever of unknown origin in the list of reimbursed (18)F-fluoro-deoxyglucose PET/CT indications. The authors try to illustrate the clinical problem with this case report. Fever of unknown origin persisted in a patient for a year, but conventional diagnostic procedures were unsuccessful to find the cause of the fever. Finally, (18)F-fluoro-deoxyglucose PET/CT indicated a metabolically active focus between the pancreas tail and the spleen. After a long-lasting antibiotic therapy the patient became symptomfree.
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Arendrup MC, Bille J, Dannaoui E, Ruhnke M, Heussel CP, Kibbler C. ECIL-3 classical diagnostic procedures for the diagnosis of invasive fungal diseases in patients with leukaemia. Bone Marrow Transplant 2012; 47:1030-45. [DOI: 10.1038/bmt.2011.246] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Imaging studies for diagnosing invasive fungal pneumonia in immunocompromised patients. Curr Opin Infect Dis 2011; 24:309-14. [PMID: 21673574 DOI: 10.1097/qco.0b013e328348b2e1] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW The aim is to review imaging advances in invasive fungal pneumonia in cancer and transplant recipients and how their use can help guide treatment. RECENT FINDINGS Early chest computed tomographic (CT) imaging of immunocompromised patients with neutropenic fever leads to improved survival. Some of the typical CT findings of invasive fungal pneumonia are transitory and are most common during the first week of symptoms. The reversed halo sign, an early sign of disease, is more common in mucormycosis. During the first 10 days of infection, invasive fungal pneumonia nodules may grow on follow-up CT scans, but this does not necessarily equate to worsening disease. Because of the excessive radiation of chest CT and because pulmonary nodule size typically expands during the first few weeks of treatment, follow-up CT scans should be ordered only when therapy changes are dependent on imaging findings. SUMMARY Early chest CT imaging in immunocompromised patients suspected of having invasive fungal pneumonia can help identify disease early, leading to improved outcome.
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Vos FJ, Donnelly JP, Oyen WJG, Kullberg BJ, Bleeker-Rovers CP, Blijlevens NMA. 18F-FDG PET/CT for diagnosing infectious complications in patients with severe neutropenia after intensive chemotherapy for haematological malignancy or stem cell transplantation. Eur J Nucl Med Mol Imaging 2011; 39:120-8. [PMID: 21947022 PMCID: PMC3227801 DOI: 10.1007/s00259-011-1939-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2011] [Accepted: 09/07/2011] [Indexed: 11/28/2022]
Abstract
Purpose Between 30 and 50% of febrile neutropenic episodes are accounted for by infection. C-reactive protein (CRP) is a nonspecific parameter for infection and inflammation but might be employed as a trigger for diagnosis. The aim of the study was to evaluate whether 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/CT can be used to detect inflammatory foci in neutropenic patients with elevated CRP and whether it helps to direct treatment. Methods Twenty-eight consecutive patients with neutropenia as a result of intensive chemotherapy for haematological malignancies or myeloablative therapy for haematopoietic stem cell transplantation were prospectively included. 18F-FDG PET/CT was added to the regular diagnostic workup once the CRP level rose above 50 mg/l. Results Pathological FDG uptake was found in 26 of 28 cases despite peripheral neutrophil counts less than 0.1 × 10−9/l in 26 patients: in the digestive tract in 18 cases, around the tract of the central venous catheter (CVC) in 9 and in the lungs in 7 cases. FDG uptake in the CVC tract was associated with coagulase-negative staphylococcal bacteraemia (p < 0.001) and deep venous thrombosis (p = 0.002). The number of patients having Streptococcus mitis bacteraemia appeared to be higher in patients with grade 3 oesophageal FDG uptake (p = 0.08). Pulmonary FDG uptake was associated with the presence of invasive fungal disease (p = 0.04). Conclusion 18F-FDG PET/CT scanning during chemotherapy-induced febrile neutropenia and increased CRP is able to detect localized foci of infection and inflammation despite the absence of circulating neutrophils. Besides its potential role in detecting CVC-related infection during febrile neutropenia, the high negative predictive value of 18F-FDG PET/CT is important for avoiding unnecessary diagnostic tests and therapy.
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Affiliation(s)
- Fidel J Vos
- Department of Internal Medicine, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
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