title: Intraparenchymal papillary meningioma of brainstem: case report and literature review.
abstract: Both intraparenchymal papillary meningioma and papillary meningioma with cyst formation of brainstem have never been reported. The authors present an extremely rare case of patient with intraparenchymal papillary meningioma of brainstem. A 23-year-old Chinese male presented with a 4-month history of progressive left upper limb and facial nerve palsy. Magnetic resonance imaging revealed a cystic-solid, heterogeneously enhancing mass in pons and right cerebral peduncle with no dural attachment. The tumor was totally removed via subtemporal approach. During surgery, the lesion was found to be completely intraparenchymal. Histological and immunohistochemical examinations were compatible with the diagnosis of papillary meningioma. The lesion recurred nine months after primary surgery, a second surgery followed by radiotherapy was performed. Till to now (nearly 2 years after the treatment), the patient is tumor free survival. Intraparenchymal meningioma of brainstem with cystic formation is very rare, however, it should be considered as a differential diagnosis of a brainstem neoplasm. The present case strongly recommended that postoperative radiotherapy was essential for the patients with papillary meningiomas.
authors.affiliation: Department of Neurosurgery, Sun Yat-sen University Cancer Center, No, 651, Dong Feng Road E., Guang-zhou 510060, PR China.
authors.forename: Xiao-Bing
authors.initials: XB
authors.lastname: Jiang
authors.forename: Chao
authors.initials: C
authors.lastname: Ke
authors.forename: Zhi-An
authors.initials: ZA
authors.lastname: Han
authors.forename: Shao-Hua
authors.initials: SH
authors.lastname: Lin
authors.forename: Yong-Gao
authors.initials: YG
authors.lastname: Mou
authors.forename: Rong-Zhen
authors.initials: RZ
authors.lastname: Luo
authors.forename: Shao-Xiong
authors.initials: SX
authors.lastname: Wu
authors.forename: Zhong-Ping
authors.initials: ZP
authors.lastname: Chen
mesh_terms: D000328:Adult; D020295:Brain Stem Neoplasms / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery; D003131:Combined Modality Therapy; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008577:Meningeal Neoplasms / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery; D008579:Meningioma / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery; D016896:Treatment Outcome; D055815:Young Adult