메니에르병 유사증상을 동반한 내림프낭에 발생한 콜레스테롤 육아종 1예

Abstract

The endolymphatic sac tumor is a very rare neurological tumor. This could be accompanied with symptoms of Meniere’s disease, such as sensorineural hearing loss, tinnitus, dizziness. A 48-year-old man presented with right side fluctuating hearing loss lasting more than 10 years and intermittent vertigo. Magnetic resonance imaging (MRI) revealed mild enlargement with abnormal high signal intensity on T1-weighted at endolymphatic sac. The patient underwent right labyrinthectomy and surgical tumor resection. During surgery, reddish mass of filling retrofacial air cell nearby common crus was observed and histologic examination was performed. The mass was connected to the endolymphatic sac. Histopathological diagnosis is cholesterol granuloma. After 10 weeks of the surgery, vertigo had disappeared. At 7 years of postoperative follow-up, there was no recurrence of previous symptoms.