Introduction: Microtia is a congenital ear aberration that can range in severity from minor structural abnormalities to complete ear absence. It can appear as a single congenitaldisability or part of a spectrum of defects or a syndrome. Microtia is frequently connected with hearing loss, and patients commonly require hearing aids and surgical ear reconstruction.Chronic ear disease or ear surgery can cause a complication Postauricular mastoid cutaneous fistula. Because of the necrotic skin borders, simple closure is frequently complex, and it may result in a bigger fistula.Postauricular cutaneous mastoid fistula is a rare disorder. Chronic suppurative otitis media cause is an infrequent complication of chronic otitis media. Because of the surrounding necrotic skin edges, the fistula tracts are typically difficult to manage

Cutaneous fistula, Otitis media, mastoid, surgical flaps.