Abstract
Invasive fungal disease (IFD) is a feared complication in patients with hematological malignancies. In 2008, the European Organization for Research and Treatment of Cancer/Invasive Fungal Infections Cooperative Group and the National Institute of Allergy and Infectious Diseases Mycosis Study Group (EORTC/MSG) published updated criteria for the diagnostic workup within clinical studies for immunosuppressed patients with suspected fungal infection. We applied these criteria in a routine clinical setting with regard to their feasibility for bedside practice at our institution in a 1-year period. One hundred seventy consecutive patients with a recent history of chemotherapy-induced neutropenia (n = 100) or allogeneic stem cell recipients (n = 70) who had received a CT scan of the chest in search of pulmonary IFD were examined. We analyzed all available radiological and microbiological data according to the EORTC/MSG criteria. The quality of images was good in 94.7 %, microbiological diagnostics performed in 94.1 % patients. Five patients had histopathologic-proven IFD, 18 patients were classified as “probable,” 55 patients as “possible” IFD, and 92 patients did not fulfill any criteria (“no IFD”). Microbiology revealed suggestive findings in 29 patients. These were either galactomannan antigen (Gm-AG) in serum (n = 18) and/or broncho-alveolar lavage (BAL) (n = 5). CT scan showed pulmonary infiltrates in 106 patients; 78 were classified as typical for IPA, further discriminated by morphology and number of nodules, as well as additional signs (halo, air crescent, cavity). We observed a better overall survival in patients without infiltrates compared to those with any type of infiltrate (p = 0.042) and a trend toward favorable survival in patients who had micronodular lesions (p = 0.058). We also found a higher probability of Gm-AG positivity in the group of allogeneic stem cell transplantation (allo-SCT) patients (p = 0.001) and a trend toward an association of Gm-AG positivity and positive findings on CT (p = 0.054). The applicability of criteria was good, both with regard to radiological and mycological evidence and sufficient for the categorization of IFD according to EORTC/MSG in the clinical setting. However, our findings suggest that feasibility improves with stringency of mycological workup, which is reflected in the two subgroups. Radiology harvests by far more suggestive findings which can only partly be correlated with mycological evidence. Although feasible, whether the EORTC/MSG criteria are the appropriate tool for early identification of IFD remains open for discussion.
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Rieger, H., Lustig, D., Barlow, S. et al. Applicability of the EORTC/MSG criteria for IFD in clinical practice. Ann Hematol 94, 847–855 (2015). https://doi.org/10.1007/s00277-014-2282-y
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DOI: https://doi.org/10.1007/s00277-014-2282-y