- 안면신경초종의 방사선학적 소견
- ㆍ 저자명
- 정선양
- ㆍ 간행물명
- 대한방사선의학회지
- ㆍ 권/호정보
- 1996년|34권 3호|pp.333-338 (6 pages)
- ㆍ 발행정보
- 대한영상의학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
Purpose : To analyze the radiologic findings of facial nerve schwannoma. Materials and Methods : The authorsretrospectively reviewed CT and/or MR images and clinical history of eight patients with histologically provenfacial nerve schwannoma. After classifying this extratemporal and intratemporal types, clinical and radiologicfindings were analysed. Results : The most common clinical findings of facial nerve schwannoma were facial nervepalsy and hearing impairment in an intratemporal schwannoma(4/5), and a palpable parotid mass in an extratemporalschwa- nnoma(3/3). On CT, each involved segment of intratemporal schwannomas(five cases) showed characteristicradiologic findings, while extratemporal schwannomas(three cases) showed masses of various types. On MRI, alltumors(two cases) showed hypointensity on T1WI, hyperintensity on T2WI, and strong enhancement on Gd-DTPA enhancedT1WI. Conclusion : Intratemporal facial nerve schwannomas can be easily diagnosed by characteristic clinical andradiologic findings. Extratemporal facial nerve schwannomas show nonspecific findings. However, if the tumor islocated between the superficial and the deep lobe of the parotid gland and extends to the posterior portion of thestyloid process, then facial nerve schwannoma is strongly suspected.