Fungal culture results and clinical effects of bronchoscopy specimens

Early isolation of the fungal pathogen and early initiation of treatment affect mortality and morbidity rates. The purpose of this study was to reveal the frequency of determination of fungal pathogens in bronchoscopy unit patients.

The study was designed retrospectively. All patients who underwent bronchoscopy for any reason were enrolled. The patients with suspected fungal infection were divided into three groups after the procedure: 1) Proven fungal infection, 2) Colonization, 3) Without infection.

One thousand one hundred and twenty-eight patients were included in the study. Fungal infection was suspected in 188 (16.7%) patients before bronchoscopy. After the examination of the bronchoscopic materials, it was determined that 59 (5.2%) patients had proven fungal infection, 148 (13.1%) patients had colonization, and 921 (81.7%) patients did not have fungal infection. The radiological findings of the patients that were indicative of fungal infection before bronchoscopy were observed as consolidation in 391 (34.7%) and nodule in 413 (36.6%). Fungal growth in bronchoscopic cultures was found in 186 (16.4%) patients, and the most common fungus was Candida albicans (C. albicans) in 110 (9.7%). The treatment was not changed according to the culture results in the patients. No treatment was initiated in the other 108 (98.2%) patients with C. albicans. One hundred and sixty-five (88%) of all fungal growths were detected in the BAL/bronchial lavage fluid. While 29 (45%) of them had not received antifungal treatment before, antifungal treatment was started after bronchoscopy.

C. albicans was isolated the most among all bacterial and fungal agents in all patient groups that were immunosuppressed or not at a routine bronchoscopy unit. Diagnostic bronchoscopic sampling should be performed at the early stages of clinically or radiologically suspected fungal illness.