[Endolymphatic sac tumor with symptoms of endolymphatic hydrops: a case report and reviews]

A 38-year-old woman had suffered from recurrent vertigo, deafness and tinnitus for 2 years. After treatment for Meniere's disease, her symptoms did not improve. The threshold of pure tone audiometry was 68dBHL SNHL. High resolution CT of the temporal bone showed that a mass is behind the posterior semicircular canal. MRI showed that mixed signals are in the center of the mass and long T1T2 signal around the mass. The mass was surgically resected. Pathology report showed: endolymphatic sac tumor.