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.