ous oral chemotherapy in myeloma cohort, IFD rate per 10,000 treatment days not provided.
© F e r r a t a S t o r t i F o u n d a t i o nhaematologica 2015; 100:e463 Table 2. Characteristics of patients with lymphoproliferative disorders with invasive fungal disease (2009)(2010)(2011)
LETTERS TO THE EDITOR
© F e r r a t a S t o r t i F o u n d a t i o nFluconazole and mold-active antifungal prophylaxis were administered to 287/773 (37.1%) and 38/773 (4.9%) patients, respectively. Patients with precursor lymphoid neoplasms had the highest prevalence of IFD (5/17; 29.4%, 95% CI 9.5-68.6%), followed by patients with mature B-cell neoplasms-CLL/SLL (4/51; 7.8%, 95% CI 2.1-20.1%), DLBCL (8/186; 4.3%, 95% CI 1.9-8.5%) and plasma cell neoplasms (7/251; 2.8%, 95% CI 1.1-5.7%). IFD events per treatment days demonstrated a similarly larger relative burden of disease in patients with precursor lymphoid neoplasms (10.7 IFD per 10,000 treatment days) ( Table 1). Mold-active antifungal prophylaxis was used in 52.9% of patients with precursor lymphoid neoplasms. Of the five patients with precursor lymphoid neoplasms who developed IFD, three had received fluconazole prophylaxis, one had received posaconazole prophylaxis and one received no antifungal prophylaxis. IFD was observed to occur at different treatment stages of disease, and these are summarized in Table 2.Aspergillus species was the most frequently identified fungal pathogen (13 cases) (cultured in 7 cases; detected on PCR in 8 cases). Other fungal pathogens, in order of reducing frequency included Candida (5 cases), Scedosporium (1 case), Scopulariopsis (1 case) and Cryptococcus (1 case) species. The pulmonary system (19 cases) was the most common site of IFD, followed by blood (5 cases), sinus (2 cases), soft tissue/viscera (2 cases) and central nervous system (1 case). Of the 29 patients treated for IFD, 12 (41.4%) required admission to the intensive care unit and 30-day all-cause mortality was 31.0% (9/29).IFD is an important and potentially modifiable cause of morbidity and mortality in patients with lymphoproliferative disorders receiving chemotherapy. Few studies have described the epidemiology and treatment outcome of IFD in these patients and none has incorporated all of the current diagnostic strategies available (e.g. Aspergillus PCR, galactomannan and FDG PET/CT diagnostics). Our study identified an overall IFD prevalence of 3.8% with cases occurring in all disease subsets except mature Tand NK-cell lymphoma. The prevalence of IFD was highest in patients with precursor lymphoid neoplasms (29.4%). This occurred despite 52.9% of patients receiving mold-active prophylaxis. This finding is consistent with a 28% incidence reported at another Australian center 8 and may be attributed to the increasing intensity of induction chemotherapy protocols for lymphoblastic haematologica 2015; 100:e465 R: rituximab; CVP:cyclophosphamide/vincristine/prednisolone; bortez: bortezomib; dex: dexamethasone; thal: thalidomide; len: lenalidomide; bleomycin, vincristine, etopo...