Frequency of Granulomatous Invasive Fungal Sinusitis in Patients with Clinical Suspicion of Chronic Fungal Rhinosinusitis.

Introduction One of the common causes of chronic sinusitis is a fungal infection, and there are various types of fungal rhinosinusitis (FRS). Missed diagnosis of occasional granulomatous invasion of fungal sinusitis can lead to involvement in the central nervous system. The aim of this study is to determine the frequency of granulomatous invasive fungal sinusitis (GIFS) in patients with clinical suspicion of chronic FRS. Methods We conducted a descriptive cross-sectional study in the Department of Ear, Nose and Throat (ENT), Nishtar Hospital, Multan from January 1, 2017 to July 1, 2018. Eighty-one patients with chronic FRS participated in the study. After informed consent, nasal tissue was biopsied for granulomatous fungal invasion. Results The frequency of GIFS was 29.6% (n=24) in this study. The significant risk factors included duration of chronic FRS for more than 12 weeks, history of diabetes mellitus, and living status as rural. Conclusion GIFS is a common complication in patients with clinical suspicion of chronic FRS. Nasal biopsy should be a common practice among patients of chronic FRS who have a long duration of disease and a history of diabetes mellitus.