Turkish Neurosurgery 2015 , Vol 25 , Num 5
Hemorrhagic Epidermoid Cyst in Cerebellar Vermis
Chuan-Yuan TAO1, Pan WEI2, Jia-Jing WANG3, Chao YOU1
1West China Hospital, Sichuan University, Department of Neurosurgery,Chengdu, Sichuan, China
2The 452nd Hospital of PLA, Department of Neurosurgery,Chengdu, Sichuan, China
3West China Hospital, Sichuan University, Department of Neurosurgical ICU, Chengdu, Sichuan, China
DOI : 10.5137/1019-5149.JTN.11844-14.0 Intracranial epidermoid cysts are usually located in the paramedian regions with characteristic imaging features. Intracystic hemorrhage is rarely reported with most in the cerebellopontine angle area. We described a case of hemorrhagic epidermoid cyst in cerebellar vermis. The patient was a 21-year-old male presenting with a first episode of convulsive seizure attack as the initial and sole symptom. Head computed tomography showed a mass lesion in the cerebellar vermis with high density and nodular low density in the back of the lesion. Magnetic resonance imaging revealed most of the lesion was hypointense to isointense, extremely hypointensity on T1-, T2-weighted imaging respectively. The nodule was hyperintense on both T1- and T2-weighted images. The atypical clinical presentation, location and radiological features of intracranial epidermoid cyst make accurate diagnosis quite challenging. In such cases, scrutinized histopathological examination is necessary to exclude the malignancy that may need radio/chemotherapy. Keywords : Cerebellar tumor, Cerebellopontine angle, Epidermoid cyst, Hemorrhage
Corresponding author : Chao You, tcy106@163.com