Methods
A retrospective study on cases of isolated FSA treated at the unit of Otolaryngology of the Hopital Lariboisière in Paris from 2009 to 2023 was performed following STROBE guidelines. A chart review was done, Demographic and radiologic data, type of treatment with intraoperative findings, and follow-up were analyzed. Moreover, a literature review was carried out on Pubmed and Scopus using the search terms “frontal sinus aspergilloma”, “frontal sinus fungus ball” and “frontal sinus mycetoma”. All returned items were filtered for relevance and English language. Relevant clinical information from the literature was subsequently pulled and tabulated for review with further datasets from our own case series (Tab 1-2 ). Geographic distribution of the cases presented in the literature was reported and the Koppen climate classification system was used to estimate environmental and climatic conditions.