Maxillary Pneumosinus Dilatans Presenting With Proptosis: A CaseReport and Review of the Literature

摘要

Background:Pneumosinus dilatans (PSD) is a rare pathological paranasal sinus expansion. This condition is usually symptomatic or cosmetically apparent, requiring surgical intervention. Multiple hypotheses have been postulated as to the cause of this condition; however, the precise cause and pathogenesis remain obscure.