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Gutiérrez-Villanueva A, Calderón-Parra J, Callejas-Diaz A, Muñez-Rubio E, Velásquez K, Ramos-Martínez A, Rodríguez-Alfonso B, Fernández-Cruz A. What do we know About the Usefulness of 18F-FDG PET-CT for the Management of Invasive Fungal Infection? An International Survey. Mycopathologia 2024; 189:84. [PMID: 39283560 DOI: 10.1007/s11046-024-00881-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Accepted: 07/29/2024] [Indexed: 10/15/2024]
Abstract
BACKGROUND Recent data support 18F-FDG PET-CT for the management of infections in immunocompromised patients, including invasive fungal infection (IFI). However, its role is not well established in clinical practice. We performed an international survey to evaluate the knowledge of physicians about the usefulness of 18F-FDG PET-CT in IFI, in order to define areas of uncertainty. METHODS An online survey was distributed to infectious diseases working groups in December 2023-January 2024. It included questions regarding access to 18F-FDG PET-CT, knowledge on its usefulness for IFI and experience of the respondents. A descriptive analysis was performed. RESULTS 180 respondents answered; 60.5% were Infectious Diseases specialists mainly from Spain (52.8%) and Italy (23.3%). 84.4% had access to 18F-FDG PET-CT at their own center. 85.6% considered that 18F-FDG PET-CT could be better than conventional tests for IFI. In the context of IFI risk, 81.1% would consider performing 18F-FDG PET-CT to study fever without a source and around 50% to evaluate silent lesions and 50% to assess response, including distinguishing residual from active lesions. Based on the results of the follow-up 18F-FDG PET-CT, 56.7% would adjust antifungal therapy duration. 60% would consider a change in the diagnostic or therapeutic strategy in case of increased uptake or new lesions. Uncovering occult lesions (52%) and diagnosing/excluding endocarditis (52.7%) were the situations in which 18F-FDG PET-CT was considered to have the most added value. There was a great variability in responses about timing, duration of uptake, the threshold for discontinuing treatment or the influence of immune status. CONCLUSION Although the majority considered that 18F-FDG PET-CT may be useful for IFI, many areas of uncertainty remain. There is a need for protocolized research to improve IFI management.
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Affiliation(s)
- A Gutiérrez-Villanueva
- Infectious Diseases Unit, Internal Medicine Department, Instituto de Investigación Sanitaria Puerta de Hierro - Segovia de Arana, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
| | - J Calderón-Parra
- Infectious Diseases Unit, Internal Medicine Department, Instituto de Investigación Sanitaria Puerta de Hierro - Segovia de Arana, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
| | - A Callejas-Diaz
- Infectious Diseases Unit, Internal Medicine Department, Instituto de Investigación Sanitaria Puerta de Hierro - Segovia de Arana, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
| | - E Muñez-Rubio
- Infectious Diseases Unit, Internal Medicine Department, Instituto de Investigación Sanitaria Puerta de Hierro - Segovia de Arana, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
| | - K Velásquez
- Nuclear Medicine Department, Instituto de Investigación Sanitaria Puerta de Hierro - Segovia de Arana, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
| | - A Ramos-Martínez
- Infectious Diseases Unit, Internal Medicine Department, Instituto de Investigación Sanitaria Puerta de Hierro - Segovia de Arana, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
- Facultad de Medicina, Universidad Autónoma de Madrid (UCM), Madrid, Spain
| | - B Rodríguez-Alfonso
- Nuclear Medicine Department, Instituto de Investigación Sanitaria Puerta de Hierro - Segovia de Arana, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
| | - A Fernández-Cruz
- Infectious Diseases Unit, Internal Medicine Department, Instituto de Investigación Sanitaria Puerta de Hierro - Segovia de Arana, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain.
- Facultad de Medicina, Universidad Autónoma de Madrid (UCM), Madrid, Spain.
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Zaj N, Kopyt W, Kamizela E, Zarychta J, Kowalczyk A, Lejman M, Zawitkowska J. Diagnostic and Therapeutic Challenge Caused by Candida albicans and Aspergillus spp. Infections in a Pediatric Patient as a Complication of Acute Lymphoblastic Leukemia Treatment: A Case Report and Literature Review. Pathogens 2024; 13:772. [PMID: 39338963 PMCID: PMC11435145 DOI: 10.3390/pathogens13090772] [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: 08/22/2024] [Revised: 08/30/2024] [Accepted: 09/02/2024] [Indexed: 09/30/2024] Open
Abstract
Fungal infections constitute a significant challenge and continue to be a predominant cause of treatment failure in pediatric leukemia cases. Despite the implementation of antifungal prophylaxis, these infections contribute to approximately 20% of cases in children undergoing treatment for acute lymphoblastic leukemia (ALL). The aim of this study is to highlight the diagnostic and therapeutic challenges associated with invasive fungal infections (IFIs). We also present a review of the epidemiology, risk factors, treatment, and a clinical presentation of IFI in patients with ALL. This case report details the clinical course of confirmed Candida albicans (C. albicans) and Aspergillus spp. infections during the consolidation phase of ALL treatment in a 5-year-old pediatric patient. This male patient did not experience any complications until Day 28 of protocol II. Then, the patient's condition deteriorated. Blood culture detected the growth of C. albicans. Despite the implementation of targeted therapy, the boy's condition did not show improvement. The appearance of respiratory symptoms necessitated a computed tomography (CT) of the chest, which revealed multiple nodular densities atypical for C. albicans etiology. In spite of ongoing antifungal treatment, the lesions depicted in the CT scans showed no regression. A lung biopsy ultimately identified Aspergillus species as the source of the infection. Overcoming fungal infections poses a considerable challenge; therefore, an accurate diagnosis and the prompt initiation of targeted therapy are crucial in managing these infections in patients with leukemia.
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Affiliation(s)
- Natalia Zaj
- Student Scientific Society of Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, 20-093 Lublin, Poland; (N.Z.); (W.K.); (E.K.); (J.Z.); (A.K.)
| | - Weronika Kopyt
- Student Scientific Society of Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, 20-093 Lublin, Poland; (N.Z.); (W.K.); (E.K.); (J.Z.); (A.K.)
| | - Emilia Kamizela
- Student Scientific Society of Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, 20-093 Lublin, Poland; (N.Z.); (W.K.); (E.K.); (J.Z.); (A.K.)
| | - Julia Zarychta
- Student Scientific Society of Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, 20-093 Lublin, Poland; (N.Z.); (W.K.); (E.K.); (J.Z.); (A.K.)
| | - Adrian Kowalczyk
- Student Scientific Society of Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, 20-093 Lublin, Poland; (N.Z.); (W.K.); (E.K.); (J.Z.); (A.K.)
| | - Monika Lejman
- Independent Laboratory of Genetic Diagnostics, Medical University of Lublin, 20-093 Lublin, Poland;
| | - Joanna Zawitkowska
- Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, 20-093 Lublin, Poland
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3
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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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Rammaert B, Maunoury C, Rabeony T, Correas JM, Elie C, Alfandari S, Berger P, Rubio MT, Braun T, Bakouboula P, Candon S, Montravers F, Lortholary O. Does 18F-FDG PET/CT add value to conventional imaging in clinical assessment of chronic disseminated candidiasis? Front Med (Lausanne) 2022; 9:1026067. [PMID: 36606049 PMCID: PMC9807873 DOI: 10.3389/fmed.2022.1026067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 11/28/2022] [Indexed: 12/24/2022] Open
Abstract
Background Chronic disseminated candidiasis (CDC) classically occurs after profound and prolonged neutropenia. The aim of the CANHPARI study was to assess the clinical value of adding 18F-fluorodeoxyglucose PET/CT to conventional radiology for initial and subsequent evaluations of CDC. Materials and methods A pilot prospective study was conducted in 23 French onco-hematological centers from 2013 to 2017 (NCT01916057). Patients ≥ 18 y.o. suspected for CDC on abdominal conventional imaging (CT or MRI) were included. PET/CT and conventional imaging were performed at baseline and month 3 (M3). Follow-up was assessed until M12. The primary outcome measure was the global response at M3, i.e., apyrexia and complete response to PET/CT. The secondary outcome measure consists in comparison between responses to PET/CT and conventional imaging at diagnosis and M3. Results Among 52 included patients, 44 were evaluable (20 probable and 24 possible CDC); 86% had acute leukemia, 55% were male (median age 47 years). At diagnosis, 34% had fever and conventional imaging was always abnormal with microabscesses on liver and spleen in 66%, liver in 25%, spleen in 9%. Baseline PET/CT showed metabolic uptake on liver and/or spleen in 84% but did not match with lesion localizations on conventional imaging in 32%. M3 PET/CT showed no metabolic uptake in 13 (34%) patients, 11 still having pathological conventional imaging. Global response at M3 was observed in eight patients. Conclusion Baseline PET/CT does not replace conventional imaging for initial staging of CDC lesions but should be performed after 3 months of antifungal therapy. Clinical trial registration [www.clinicaltrials.gov], identifier [NCT01916057].
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Affiliation(s)
- Blandine Rammaert
- Université de Paris Cité, APHP, Service des Maladies Infectieuses et Tropicales, Hôpital Necker-Enfants Malades, Centre d’Infectiologie Necker-Pasteur, Institut Imagine, Paris, France,*Correspondence: Blandine Rammaert,
| | - Christophe Maunoury
- Université de Paris, APHP, Hôpital Européen Georges Pompidou, Service de Médecine Nucléaire, Paris, France
| | | | - Jean-Michel Correas
- Université de Paris Cité, APHP, Service de Radiologie Adulte, Hôpital Necker-Enfants Malades, Paris, France
| | | | - Serge Alfandari
- Centre Hospitalier Tourcoing, Service de Réanimation et Maladies Infectieuses, Tourcoing, France
| | - Pierre Berger
- Institut Paoli-Calmettes, Infectiologie Transversale, Marseille, France
| | | | - Thorsten Braun
- Université de Paris Nord, APHP, Hôpital Avicenne, Service d’Hématologie, Bobigny, France
| | | | - Sophie Candon
- Université de Rouen Normandie, INSERM U1234, CHU de Rouen Normandie, Rouen, France
| | - Françoise Montravers
- Sorbonne Université, APHP, Service de Médecine Nucléaire, Hôpital Tenon, Paris, France
| | - Olivier Lortholary
- Université de Paris Cité, APHP, Service des Maladies Infectieuses et Tropicales, Hôpital Necker-Enfants Malades, Centre d’Infectiologie Necker-Pasteur, Institut Imagine, Paris, France,Institut Pasteur, CNRS, Unité de Mycologie Moléculaire, Centre National de Référence Mycoses Invasives et Antifongiques, UMR 2000, Paris, France
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5
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Douglas A, Thursky K, Slavin M. New approaches to management of fever and neutropenia in high-risk patients. Curr Opin Infect Dis 2022; 35:500-516. [PMID: 35947070 DOI: 10.1097/qco.0000000000000872] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
PURPOSE OF REVIEW Patients receiving treatment for acute leukaemia and haematopoietic cell transplantation (HCT) have prolonged neutropenia and are at high risk of neutropenic fever, with bacterial and particularly invasive fungal infections as feared complications, possessing potentially serious consequences including intensive care admission and mortality. Concerns for these serious complications often lead to long durations of broad-spectrum antimicrobial therapy and escalation to even broader therapy if fever persists. Further, the default approach is to continue neutropenic fever therapy until count recovery, leaving many patients who have long defervesced on prolonged antibiotics. RECENT FINDINGS This article details recent progress in this field with particular emphasis on early discontinuation studies in resolved neutropenic fever and improved imaging techniques for the investigation of those with persistent neutropenic fever. Recent randomized controlled trials have shown that early cessation of empiric neutropenic fever therapy is well tolerated in acute leukaemia and autologous HCT patients who are clinically stable and afebrile for 72 h. Delineation of the best approach to cessation (timing and/or use of fluoroquinolone prophylaxis) and whether this approach is well tolerated in the higher risk allogeneic HCT setting is still required. Recent RCT data demonstrate utility of FDG-PET/CT to guide management and rationalize antimicrobial therapy in high-risk patient groups with persistent neutropenic fever. SUMMARY Acute leukaemic and autologous HCT patients with resolved neutropenic fever prior to count recovery can have empiric therapy safely discontinued or de-escalated. There is an emerging role of FDG-PET/CT to support decision-making about antibiotic and antifungal use in high-risk persistent/recurrent neutropenic fever patients.
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Affiliation(s)
- Abby Douglas
- National Centre for Infections in Cancer.,Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne
| | - Karin Thursky
- National Centre for Infections in Cancer.,Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne.,National Centre for Antimicrobial Stewardship, Department of Infectious Diseases, University of Melbourne.,Department of Health Services Research, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Monica Slavin
- National Centre for Infections in Cancer.,Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne.,Victorian Infectious Diseases Service, Royal Melbourne Hospital.,Department of Health Services Research, Peter MacCallum Cancer Centre, Melbourne, Australia
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6
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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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7
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Leroy-Freschini B, Imperiale A. PET imaging in invasive fungal infection. Nucl Med Mol Imaging 2022. [DOI: 10.1016/b978-0-12-822960-6.00022-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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8
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Fernández-Cruz A, Lewis RE, Kontoyiannis DP. How Long Do We Need to Treat an Invasive Mold Disease in Hematology Patients? Factors Influencing Duration of Therapy and Future Questions. Clin Infect Dis 2021; 71:685-692. [PMID: 32170948 DOI: 10.1093/cid/ciz1195] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 03/11/2019] [Indexed: 12/18/2022] Open
Abstract
Treatment duration for invasive mold disease (IMD) in patients with hematological malignancy is not standardized and is a challenging subject in antifungal stewardship. Concerns for IMD relapse during subsequent reinduction or consolidation chemotherapy or graft versus host disease treatment in hematopoietic stem cell transplant recipients often results in prolonged or indefinite antifungal treatment. There are no validated criteria that predict when it is safe to stop antifungals. Decisions are individualized and depend on the offending fungus, site and extent of IMD, comorbidities, hematologic disease prognosis, and future plans for chemotherapy or transplantation. Recent studies suggest that FDG-PET/CT could help discriminate between active and residual fungal lesions to support decisions for safely stopping antifungals. Validation of noninvasive biomarkers for monitoring treatment response, tests for quantifying the "net state of immunosuppression," and genetic polymorphisms associated with poor fungal immunity could lead to a personalized assessment for the continued need for antifungal therapy.
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Affiliation(s)
- 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, Madrid, Spain
| | - Russell E Lewis
- Clinic of Infectious Diseases, Department of Medical and Surgical Sciences, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Dimitrios P Kontoyiannis
- Department of Infectious Diseases, Infection Control and Employee Health, University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA
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9
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Morgan JE, Phillips B, Haeusler GM, Chisholm JC. Optimising Antimicrobial Selection and Duration in the Treatment of Febrile Neutropenia in Children. Infect Drug Resist 2021; 14:1283-1293. [PMID: 33833534 PMCID: PMC8019605 DOI: 10.2147/idr.s238567] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 02/11/2021] [Indexed: 12/13/2022] Open
Abstract
Febrile neutropenia (FN) is a frequent complication of cancer treatment in children. Owing to the potential for overwhelming bacterial sepsis, the recognition and management of FN requires rapid implementation of evidenced-based management protocols. Treatment paradigms have progressed from hospitalisation with broad spectrum antibiotics for all patients, through to risk adapted approaches to management. Such risk adapted approaches aim to provide safe care through incorporating antimicrobial stewardship (AMS) principles such as implementation of comprehensive clinical pathways incorporating de-escalation strategies with the imperative to reduce hospital stay and antibiotic exposure where possible in order to improve patient experience, reduce costs and diminish the risk of nosocomial infection. This review summarises the principles of risk stratification in FN, the current key considerations for optimising empiric antimicrobial selection including knowledge of antimicrobial resistance patterns and emerging technologies for rapid diagnosis of specific infections and summarises existing evidence on time to treatment, investigations required and duration of treatment. To aid treating physicians we suggest the key features based on current evidence that should be part of any FN management guideline and highlight areas for future research. The focus is on treatment of bacterial infections although fungal and viral infections are also important in this patient group.
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Affiliation(s)
- Jessica E Morgan
- Centre for Reviews and Dissemination, University of York, Heslington, YO10 5DD, UK.,Department of Paediatric Oncology, Leeds Teaching Hospitals NHS Trust, Leeds, LS1 3EX, UK
| | - Bob Phillips
- Centre for Reviews and Dissemination, University of York, Heslington, YO10 5DD, UK.,Department of Paediatric Oncology, Leeds Teaching Hospitals NHS Trust, Leeds, LS1 3EX, UK
| | - Gabrielle M Haeusler
- NHMRC National Centre for Infections in Cancer, Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, 3010, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, 3010, Australia.,Infection Diseases Unit, Department of General Medicine, Royal Children's Hospital, Parkville, Victoria, 3168, Australia.,Murdoch Children's Research Institute, Parkville, Victoria, 3052, Australia
| | - Julia C Chisholm
- Royal Marsden Hospital and Institute of Cancer Research, Sutton, SM2 5PT, UK
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10
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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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11
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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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12
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Douglas AP, Thursky KA, Worth LJ, Harrison SJ, Hicks RJ, Slavin MA. Access, knowledge and experience with fluorodeoxyglucose positron emission tomography/computed tomography in infection management: a survey of Australia and New Zealand infectious diseases physicians and microbiologists. Intern Med J 2020; 49:615-621. [PMID: 30230669 DOI: 10.1111/imj.14117] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 09/08/2018] [Accepted: 09/08/2018] [Indexed: 12/29/2022]
Abstract
BACKGROUND Despite fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) being funded only for staging and restaging of some malignancies in Australia, there is evidence of benefit of FDG-PET/CT for infection indications such as pyrexia of unknown origin (PUO), prolonged neutropenic fever (NF) and prosthetic device infection. AIM To evaluate the current knowledge, utilisation of and gaps in access to FDG-PET/CT for infectious indications by Australasian infectious diseases (ID) physicians and microbiologists. METHODS An online survey was administered to ID and microbiology doctors practising in adult medicine in Australia and New Zealand through two established email networks. Using targeted questions and case-based examples, multiple themes were explored, including access to FDG-PET/CT, use and perceived benefit of FDG-PET/CT in diagnosis and monitoring of non-malignant conditions such as NF and PUO, and barriers to clinical use of FDG-PET/CT. RESULTS A response was received from 120 participants across all states and territories. Onsite and offsite FDG-PET/CT access was 63% and 31% respectively. Eighty-six percent reported using FDG-PET/CT for one or more infection indications and all had found it clinically useful, with common indications being PUO, prosthetic device infections and use in the immunocompromised host for prolonged NF and invasive fungal infection. Thirty-eight percent reported barriers in accessing FDG-PET/CT for infection indications and 76% would utilise FDG-PET/CT more frequently if funding existed for infection indications. CONCLUSION Access to FDG-PET/CT in Australia and New Zealand is modest and is limited by lack of reimbursement for infection indications. There is discrepancy between recognised ID indications for FDG-PET/CT and funded indications.
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Affiliation(s)
- Abby P Douglas
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia.,The National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Karin A Thursky
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia.,The National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Victorian Infectious Diseases Service, The Peter Doherty Institute for Immunity and Infection, Royal Melbourne Hospital, Melbourne, Victoria, Australia.,The National Centre for Antimicrobial Stewardship, Melbourne, Victoria, Australia
| | - Leon J Worth
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia.,The National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,The National Centre for Antimicrobial Stewardship, Melbourne, Victoria, Australia
| | - Simon J Harrison
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia.,The National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Department of Haematology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Department of Haematology, Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Rodney J Hicks
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia.,Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Monica A Slavin
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia.,The National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Victorian Infectious Diseases Service, The Peter Doherty Institute for Immunity and Infection, Royal Melbourne Hospital, Melbourne, Victoria, Australia
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13
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Douglas AP, Thursky KA, Worth LJ, Harrison SJ, Hicks RJ, Slavin MA. FDG-PET/CT in managing infection in patients with hematological malignancy: clinician knowledge and experience in Australia. Leuk Lymphoma 2019; 60:2471-2476. [PMID: 30947578 DOI: 10.1080/10428194.2019.1590571] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
PET/CT is useful for investigation of neutropenic fever (NF) and potential invasive fungal infection (IFI) in those with hematological malignancies (HM). An online survey evaluating the utility and current practices regarding PET/CT scanning for investigation of NF was distributed to infectious diseases (ID) clinicians and hematologists via email lists hosted by key professional bodies. One-hundred and forty-five clinicians responded (120 ID; 25 hematologists). Access to PET/CT was fair but timeliness of investigation was limited (within 3 days in 35% and 46% of ID and hematology respondents, respectively). Among those with experience with PET/CT for infection (n = 109), 40% had utilized PET/CT for prolonged NF and 20% for diagnosing IFI. The majority of respondents indicated the desire to utilize PET/CT more frequently for infection indications. There is a strong desire among surveyed Australian clinicians to use PET/CT for prolonged NF and potential IFI. However, access to PET/CT is a current barrier to uptake.
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Affiliation(s)
- Abby P Douglas
- Department of Infectious Diseases, Peter MacCallum Cancer Centre , Melbourne , Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne , Melbourne , Australia.,National Centre for Infections in Cancer, Peter MacCallum Cancer Centre , Melbourne , Australia
| | - Karin A Thursky
- Department of Infectious Diseases, Peter MacCallum Cancer Centre , Melbourne , Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne , Melbourne , Australia.,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.,National Centre for Antimicrobial Stewardship , Melbourne , Australia
| | - Leon J Worth
- Department of Infectious Diseases, Peter MacCallum Cancer Centre , Melbourne , Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne , Melbourne , Australia.,National Centre for Infections in Cancer, Peter MacCallum Cancer Centre , Melbourne , Australia.,National Centre for Antimicrobial Stewardship , Melbourne , Australia
| | - Simon James Harrison
- Sir Peter MacCallum Department of Oncology, University of Melbourne , Melbourne , Australia.,National Centre for Infections in Cancer, Peter MacCallum Cancer Centre , Melbourne , Australia.,Department of Haematology, Peter MacCallum Cancer Centre , Melbourne , Australia.,Department of Haematology, Royal Melbourne Hospital , Melbourne , Australia
| | - Rod John Hicks
- Sir Peter MacCallum Department of Oncology, University of Melbourne , Melbourne , Australia.,Cancer Imaging, Peter MacCallum Cancer Centre , Melbourne , Australia
| | - Monica A Slavin
- Department of Infectious Diseases, Peter MacCallum Cancer Centre , Melbourne , Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne , Melbourne , Australia.,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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14
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Brøndserud MB, Pedersen C, Rosenvinge FS, Høilund-Carlsen PF, Hess S. Clinical value of FDG-PET/CT in bacteremia of unknown origin with catalase-negative gram-positive cocci or Staphylococcus aureus. Eur J Nucl Med Mol Imaging 2019; 46:1351-1358. [PMID: 30788532 DOI: 10.1007/s00259-019-04289-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 02/08/2019] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Bacteremia is associated with high mortality, especially when the site of infection is unknown. While conventional imaging usually focus on specific body parts, FDG-PET/CT visualizes hypermetabolic foci throughout the body. PURPOSE To investigate the ability of FDG/PET-CT to detect the site of infection and its clinical impact in bacteremia of unknown origin with catalase-negative Gram-positive cocci (excluding pneumococci and enterococci) or Staphylococcus aureus (BUOCSA). METHODS We retrospectively identified 157 patients with 165 episodes of BUOCSA, who subsequently underwent FDG-PET/CT. Data were collected from medical records. Decision regarding important sites of infection in patients with bacteremia was based on the entire patient course and served as reference diagnosis for comparison with FDG-PET/CT findings. FDG-PET/CT was considered to have high clinical impact if it correctly revealed site(s) of infection in areas not assessed by other imaging modalities or if other imaging modalities were negative/equivocal in these areas, or if it established a new clinically relevant diagnosis, and/or led to change in antimicrobial treatment. RESULTS FDG-PET/CT detected sites of infection in 56.4% of cases and had high clinical impact in 47.3%. It was the first imaging modality to identify sites of infection in 41.1% bacteremia cases, led to change of antimicrobial therapy in 14.7%, and established a new diagnosis unrelated to bacteremia in 9.8%. Detection rate and clinical impact were not significantly influenced by duration of antimicrobial treatment preceding FDG-PET/CT, days from suspicion of bacteremia to FDG-PET/CT-scan, type of bacteremia, or cancer. CONCLUSION FDG-PET/CT appears clinically useful in BUOCSA. Prospective studies are warranted for confirmation.
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Affiliation(s)
- Mette Bordinggaard Brøndserud
- Department of Nuclear Medicine, Odense University Hospital, Sdr. Boulevard 29, Indgang 44, 46, 5000, Odense C, Denmark. .,Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, J.B. Winsløws Vej 23, 3, 5000, Odense C, Denmark. .,Department of Rheumatology, Odense University Hospital, Kløvervænget 5, Indgang 132 1, 5000, Odense C, Denmark.
| | - Court Pedersen
- Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, J.B. Winsløws Vej 23, 3, 5000, Odense C, Denmark.,Department of Infectious Diseases, Odense University Hospital, J. B. Winsløws Vej 4, Indgang 20, 5000, Odense C, Denmark
| | - Flemming S Rosenvinge
- Department of Clinical Microbiology, Odense University Hospital, J.B. Winsløws Vej 21, 2, 5000, Odense C, Denmark
| | - Poul F Høilund-Carlsen
- Department of Nuclear Medicine, Odense University Hospital, Sdr. Boulevard 29, Indgang 44, 46, 5000, Odense C, Denmark.,Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, J.B. Winsløws Vej 23, 3, 5000, Odense C, Denmark
| | - Søren Hess
- Department of Nuclear Medicine, Odense University Hospital, Sdr. Boulevard 29, Indgang 44, 46, 5000, Odense C, Denmark.,Department of Radiology and Nuclear Medicine, Hospital South West Jutland, Finsensgade 35, 6700, Esbjerg, Denmark.,Department of Regional Health Research, Faculty of Health Sciences, University of Southern Denmark, J.B. Winsløws Vej 23, 3, 5000, Odense C, Denmark
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15
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Leroy-Freschini B, Treglia G, Argemi X, Bund C, Kessler R, Herbrecht R, Imperiale A. 18F-FDG PET/CT for invasive fungal infection in immunocompromised patients. QJM 2018; 111:613-622. [PMID: 29917146 DOI: 10.1093/qjmed/hcy128] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Opportunistic invasive fungal infections (IFIs) comprise a heterogeneous spectrum of pathogens, whose early diagnosis remains challenging. Candida spp. and Aspergillus spp, the most frequent pathogens in immunocompromised patients, frequently affect lungs, liver, bone and skin. AIM To evaluate the impact of 18F-FDG PET/CT in the management of immunocompromised patients with IFI. DESIGN A single-center retrospective study included 51 immunocompromised patients with IFI diagnosis undergoing 83 18F-FDG PET/CTs. METHODS Twenty-nine 18F-FDG PET/CTs were performed for primary work-up in 29 treatment-naïve patients. Fifty-four PET/CTs were performed during follow-up to confirm IFI suspicion in 22 patients who had anti-fungal drug therapy before PET/CT. When available, histological and/or microbiological criteria were used to assess IFI diagnosis. RESULTS Aspergillus spp. and Candida spp. were the most frequent microorganisms responsible for IFI in our population. 18F-FDG PET/CT sensitivity, specificity, positive and negative predictive values, and global accuracy were 93%, 81%, 95%, 72% and 90%, respectively. 18F-FDG PET/CT influenced the diagnostic work-up at primary staging in 16/29 patients (55%) by assessing the extent of infection and targeting the diagnostic procedure. 18F-FDG PET/CT results during treatment induced anti-fungal drugs dosage increase and/or new drugs addition in 8/54 cases (15%) and contributed to the reduction of anti-fungal drugs dosage or treatment withdraws in 17 cases (31%). CONCLUSIONS We recommend the utilization of 18F-FDG PET/CT to improve the primary staging work-up of immunocompromised patients with IFI and to assess treatment effectiveness or disease relapse. Both 18F-FDG PET/CT and conventional imaging should be integrated into a well-defined imaging diagnostic algorithm considering the clinical context and both strengths and limitations of each diagnostic modality.
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Affiliation(s)
- B Leroy-Freschini
- From the Biophysics and Nuclear Medicine, Strasbourg University Hospitals, Strasbourg, France
| | - G Treglia
- Nuclear Medicine and PET/CT Centre, Oncology Institute of Southern Switzerland, Bellinzona, Switzerland
- Health Technology Assessment, Innovation Area, General Directorate, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
- Department of Nuclear Medicine and Molecular Imaging, CHUV University Hospital, Lausanne, Switzerland
| | - X Argemi
- Federation of Translational Medicine of Strasbourg (FMTS), Faculty of Medicine, Strasbourg University, Strasbourg, France
- Infectious Diseases and Tropical Medicine, Strasbourg University Hospitals, Strasbourg, France
| | - C Bund
- From the Biophysics and Nuclear Medicine, Strasbourg University Hospitals, Strasbourg, France
- Federation of Translational Medicine of Strasbourg (FMTS), Faculty of Medicine, Strasbourg University, Strasbourg, France
- ICube, CNRS/UMR 7357, Strasbourg University, Strasbourg, France
| | - R Kessler
- Pneumology, Strasbourg University Hospitals, Strasbourg, France
- Vascular and Tissular Stress in Transplantation, EA7293 Illkirch, France
| | - R Herbrecht
- Oncology and Hematology, Strasbourg University Hospitals, Strasbourg, France
- University of Strasbourg and INSERM U1113, Strasbourg, France
| | - A Imperiale
- From the Biophysics and Nuclear Medicine, Strasbourg University Hospitals, Strasbourg, France
- Federation of Translational Medicine of Strasbourg (FMTS), Faculty of Medicine, Strasbourg University, Strasbourg, France
- ICube, CNRS/UMR 7357, Strasbourg University, Strasbourg, France
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16
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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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17
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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: 12] [Impact Index Per Article: 2.0] [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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18
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Wang SS, Mechinaud F, Thursky K, Cain T, Lau E, Haeusler GM. The clinical utility of fluorodeoxyglucose-positron emission tomography for investigation of fever in immunocompromised children. J Paediatr Child Health 2018; 54:487-492. [PMID: 29235187 DOI: 10.1111/jpc.13809] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 09/25/2017] [Accepted: 10/03/2017] [Indexed: 11/25/2022]
Abstract
AIM Fever in immunocompromised children presents significant challenges. We aimed to determine the clinical impact of fluorodeoxyglucose-positron emission tomography (FDG-PET) in combination with computed tomography (CT) in children with malignancy or following haematopoietic stem cell transplantation with prolonged or recurrent fever. METHODS Immunocompromised children who underwent FDG-PET/CT for investigation of prolonged or recurrent fever were identified from hospital databases. The clinical impact of the FDG-PET/CT was considered 'high' if it contributed to any of the following: diagnosis of a new site infection/inflammation, change to antimicrobials or chemotherapy, or additional investigations or specialist consult contributing to final diagnosis. RESULTS Fourteen patients underwent an FDG-PET/CT for prolonged or recurrent fever. Median age was 11 years and 46% had diagnosis of acute lymphoblastic leukaemia. The median absolute neutrophil count on the day of FDG-PET/CT was 0.47 cells/μL. The clinical impact of FDG-PET/CT was 'high' in 11 (79%) patients, contributing to rationalisation of antimicrobials in three, and cessation of antimicrobials in five. Compared to conventional imaging, FDG PET/CT identified seven additional sites of clinically significant infection/inflammation in seven patients. Of the 10 patients who had a cause of fever identified, FDG-PET/CT contributed to the final diagnosis in six (60%). CONCLUSION This study has identified potential utility for FDG-PET/CT in immunocompromised children with prolonged or recurrent fever. Further prospective studies are needed to compare FDG-PET/CT versus conventional imaging, to identify the optimal timing of FDG-PET/CT and to study the role of subsequent scans to monitor response to therapy.
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Affiliation(s)
- Shiqi Stacie Wang
- Children's Cancer Centre, Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Francoise Mechinaud
- Children's Cancer Centre, Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Karin Thursky
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,NHMRC National Centre for Antimicrobial Stewardship, Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Timothy Cain
- Department of Radiology, Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Eddie Lau
- Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Gabrielle M Haeusler
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia.,Paediatric Integrated Cancer Service, Royal Children's Hospital, Melbourne, Victoria, Australia
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19
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Parisi MT, Otjen JP, Stanescu AL, Shulkin BL. Radionuclide Imaging of Infection and Inflammation in Children: a Review. Semin Nucl Med 2017; 48:148-165. [PMID: 29452618 DOI: 10.1053/j.semnuclmed.2017.11.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
With the exception of radiolabeled monoclonal antibodies, antibody fragments and radiolabeled peptides which have seen little application in the pediatric population, the nuclear medicine imaging procedures used in the evaluation of infection and inflammation are the same for both adults and children. These procedures include (1) either a two- or a three-phase bone scan using technetium-99m methylene diphosphonate; (2) Gallium 67-citrate; (3) in vitro radiolabeled white blood cell imaging (using 111Indium-oxine or 99mTechnetium hexamethyl-propylene-amine-oxime-labeled white blood cells); and (4) hybrid imaging with 18F-FDG. But children are not just small adults. Not only are the disease processes encountered in children different from those in adults, but there are developmental variants that can mimic, but should not be confused with, pathology. This article discusses some of the differences between adults and children with osteomyelitis, illustrates several of the common developmental variants that can mimic disease, and, finally, focuses on the increasing use of 18F-FDG PET/CT in the diagnosis and response monitoring of children with infectious and inflammatory processes. The value of and need for pediatric specific imaging protocols are reviewed.
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Affiliation(s)
- Marguerite T Parisi
- Department of Radiology, University of Washington School of Medicine and Seattle Children's Hospital, Seattle, WA.; Department of Pediatrics, University of Washington School of Medicine and Seattle Children's Hospital, Seattle, WA..
| | - Jeffrey P Otjen
- Department of Radiology, University of Washington School of Medicine and Seattle Children's Hospital, Seattle, WA
| | - A Luana Stanescu
- Department of Radiology, University of Washington School of Medicine and Seattle Children's Hospital, Seattle, WA
| | - Barry L Shulkin
- Department of Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, TN
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20
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Morrissey CO, Gilroy NM, Macesic N, Walker P, Ananda-Rajah M, May M, Heath CH, Grigg A, Bardy PG, Kwan J, Kirsa SW, Slavin M, Gottlieb T, Chen S. Consensus guidelines for the use of empiric and diagnostic-driven antifungal treatment strategies in haematological malignancy, 2014. Intern Med J 2014; 44:1298-314. [DOI: 10.1111/imj.12596] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- C. O. Morrissey
- Department of Infectious Diseases; Alfred Health and Monash University; Prahran Victoria
- Department of Clinical Haematology; Alfred Health; Prahran Victoria
| | - N. M. Gilroy
- Blood and Marrow Transplant (BMT) Network; Agency for Clinical Innovation; Chatswood New South Wales
- Department of Infectious Diseases and Clinical Microbiology; St Vincent's Hospital; Darlinghurst New South Wales
| | - N. Macesic
- Departmentof Infectious Diseases; Austin Health; Heidelberg Victoria
| | - P. Walker
- Malignant Haematology and Stem Cell Transplantation Service; Alfred Health; Prahran Victoria
- Australian Centre for Blood Diseases; Monash University; Melbourne Victoria
| | - M. Ananda-Rajah
- Department of Infectious Diseases; Alfred Health and Monash University; Prahran Victoria
- Department of General Medicine; Alfred Health; Prahran Victoria
| | - M. May
- Department of Microbiology; Sullivan Nicolaides Pathology; Brisbane Queensland
| | - C. H. Heath
- Department of Microbiology and Infectious Diseases; Royal Perth Hospital; Perth Western Australia
- School of Medicine and Pharmacology (RPH Unit); University of Western Australia; Perth Western Australia
| | - A. Grigg
- Department of Clinical Haematology; Austin Health; Heidelberg Victoria
- School of Medicine; The University of Melbourne; Melbourne Victoria
| | - P. G. Bardy
- Royal Adelaide Hospital Cancer Centre; Royal Adelaide Hospital; Adelaide South Australia
- Division of Medicine; The Queen Elizabeth Hospital; Woodville South South Australia
- Discipline of Medicine; School of Medicine; The University of Adelaide; Adelaide South Australia
| | - J. Kwan
- Department of Haematology and Bone Marrow Transplant; Westmead Hospital; Westmead New South Wales
| | - S. W. Kirsa
- Pharmacy Department; Peter MacCallum Cancer Centre; East Melbourne Victoria
| | - M. Slavin
- School of Medicine; The University of Melbourne; Melbourne Victoria
- Department of Infectious Diseases and Infection Control; Peter MacCallum Cancer Centre; East Melbourne Victoria
- Victorian Infectious Diseases Service; The Doherty Institute for Infection and Immunity; Parkville Victoria
| | - T. Gottlieb
- The Infectious Diseases and Microbiology Department; Concord Repatriation General Hospital; Concord New South Wales
| | - S. Chen
- Centre for Infectious Diseases and Microbiology Laboratory Services; ICPMR - Pathology West; Westmead New South Wales
- Department of Infectious Diseases; Westmead Hospital; Westmead New South Wales
- Sydney Medical School; The University of Sydney; Sydney New South Wales
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21
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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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22
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Gafter-Gvili A, Paul M, Bernstine H, Vidal L, Ram R, Raanani P, Yeshurun M, Tadmor B, Leibovici L, Shpilberg O, Groshar D. The role of 18F-FDG PET/CT for the diagnosis of infections in patients with hematological malignancies and persistent febrile neutropenia. Leuk Res 2013; 37:1057-62. [DOI: 10.1016/j.leukres.2013.06.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2013] [Revised: 06/11/2013] [Accepted: 06/17/2013] [Indexed: 12/28/2022]
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23
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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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24
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Haeusler GM, Slavin MA, Seymour JF, Lingaratnam S, Teh BW, Tam CS, Thursky KA, Worth LJ. Late-onset Pneumocystis jirovecii pneumonia post-fludarabine, cyclophosphamide and rituximab: implications for prophylaxis. Eur J Haematol 2013; 91:157-63. [PMID: 23668894 PMCID: PMC7163499 DOI: 10.1111/ejh.12135] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/08/2013] [Indexed: 12/13/2022]
Abstract
Objective Fludarabine, cyclophosphamide and rituximab (FCR) therapy for lymphoid malignancies has historically been associated with a low reported incidence of Pneumocystis jirovecii pneumonia (PJP). However, prophylaxis was routinely used in early studies, and molecular diagnostic tools were not employed. The objective of this study was to review the incidence of PJP during and post‐FCR in the era of highly sensitive molecular diagnostics and 18F‐fluorodeoxyglucose (FDG) positron emission tomography (PET)–computerised tomography (CT). Methods All patients treated with standard FCR at the Peter MacCallum Cancer Centre (March 2009 to June 2012) were identified from a medications management database. Laboratory‐confirmed PJP cases during this time were identified from an electronic database. Results Overall, 66 patients were treated with a median of 5.5 FCR cycles. Eight PJP cases were identified, 6 of whom had received chemotherapy prior to FCR. In 5 cases, 18F‐FDG PET demonstrated bilateral ground‐glass infiltrates. Median CD4+ lymphocyte counts at time of PJP diagnosis and 9–12 months following FCR were 123 and 400 cells/μL, respectively. In patients receiving no prophylaxis, 9.1% developed PJP during FCR. The rate following FCR was 18.4%, with median onset at 6 months (2.4–24 months). Conclusion Given the high rate of late‐onset PJP, consideration should be given for extended PJP prophylaxis for up to 12 months post‐FCR, particularly in pretreated patients. Further evaluation of the role of CD4+ monitoring is warranted to quantify risk of disease development and to guide duration of prophylaxis.
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Affiliation(s)
- Gabrielle M Haeusler
- Department of Infectious Diseases and Infection Control, Peter MacCallum Cancer Centre, East Melbourne, Vic, Australia.
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