종양내 출혈을 동반한 청신경 초종

The report of massive intratumoral hemorrhage from vestibular schwannoma is rare. A 66-year-old female who had suffered from disturbance of hearing for one year developed severe headache and dizziness. Brain MRI showed crescent shaped mass in the left cerebellopontine angle. A left suboccipital approach revealed an $3{\times}3cm$-sized encapsulated mass. The tumor was totally extirpated together with clot. Histologically the tumor was schwannoma with massive hemorrhage. Postoperative course was uneventful. The authors report the rare case of vestibular schwannoma presenting with intratumoral hemorrhage with review of possible pathophysiology and associated factor.