title: Sylvian fissure dermoid cyst with intratumoral hemorrhage: case report.
abstract: It is rare for a dermoid cyst to develop intratumoral hemorrhage. A 61-year-old woman had a sudden-onset left hemiparesis and slow response to verbal requests for one week when unenhanced computed tomography scanning revealed a mixed iso- and hypo-dense heterogeneous lesion in the right fronto-temporal area. T1-weighted magnetic resonance imaging (MRI) of the brain showed a mixed hyper- and hypo-intense tumor in the right fronto-temporal area. The tumor became hyperintense on T2-weighted MRI and was faintly enhanced at tumor periphery on T1-weighted MRI. The tumor was excised and pathological examination revealed a dermoid cyst with intratumoral hemorrhage. The post-operative course was complicated by hemorrhage in the tumor bed, which was evacuated immediately. The patient improved and could walk without support two weeks after the second operation. After 1 year of follow-up, she was well and without neurological deficits. To the best of our knowledge after a literature review, only two previous cases of dermoid cyst have featured intratumoral hemorrhage.
authors.affiliation: Department of Surgery, Buddhist Tzu Chi Dalin General Hospital, Dalin, Chia-Yi, Taiwan.
authors.forename: Jin-Cherng
authors.initials: JC
authors.lastname: Chen
authors.forename: Yun
authors.initials: Y
authors.lastname: Chen
authors.forename: Swei-Ming
authors.initials: SM
authors.lastname: Lin
authors.forename: Sheng-Hong
authors.initials: SH
authors.lastname: Tseng
mesh_terms: D020295:Brain Stem Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D002535:Cerebral Aqueduct; D003884:Dermoid Cyst / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D005260:Female; D006801:Humans; D020300:Intracranial Hemorrhages / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D008875:Middle Aged