title: The classification of posterior petrous meningiomas and its clinical significance.
abstract: This retrospective analysis of the clinical records of 42 patients was used to study the clinical significance of a classification system for posterior petrous meningiomas. According to clinical manifestations and radiological images, posterior petrous meningiomas were classified into three types: type I (cerebella type; 12 patients), tumours involved and compressed the cerebellum; type II (cranial nerve type; 16 patients), tumours involved the cranial nerves; and type III (combined type; 14 patients), tumours involved more than one structure such as the cerebellum, cranial nerves and the brain stem. All patients underwent microneurosurgery and the total resection rate was 90%. It was more difficult totally to resect type II and III tumours than type I tumours and the post-operative functional outcomes were worse. Microneurosurgical techniques and skills are critical to increase the total resection rate of posterior petrous meningiomas in order to decrease the mortality and disability rates.
authors: Department of Neurosurgery, Qilu Hospital, Shandong University, Jinan, China.
authors: F J
authors: FJ
authors: Qu
authors: X D
authors: XD
authors: Zhou
authors: X L
authors: XL
authors: Wang
authors: F
authors: F
authors: Li
authors: X D
authors: XD
authors: Lu
authors: Y G
authors: YG
authors: Liu
authors: Y H
authors: YH
authors: Zhong
authors: H A
authors: HA
authors: Yang
authors: S L
authors: SL
authors: Ni
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008579:Meningioma / Q000145:classification* / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D010579:Petrous Bone / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D011183:Postoperative Complications / Q000473:pathology; D012888:Skull Neoplasms / Q000145:classification* / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome