title: Postoperative cerebellar herniation in a large intrapetrous aneurysmal bone cyst.
abstract: An 18-year old boy presented with a tumour involving a large part of the petrous bone. A radical resection of a petrous bone 'aneurysmal bone cyst' was achieved. A large defect in the dura adjoining the posterior surface of the petrous bone was made during surgery. Post-operative MR imaging showed complete tumour resection but herniation of cerebellum into the operative defect, a phenomenon probably assisting to seal the site of cerebrospinal fluid fistula.
authors.affiliation: Department of Neurosurgery, King Edward VII Memorial Hospital and Seth G.S. Medical College, Parel, Mumbai 400012, India.
authors.forename: D P
authors.initials: DP
authors.lastname: Muzumdar
authors.forename: A
authors.initials: A
authors.lastname: Goel
authors.forename: R
authors.initials: R
authors.lastname: Mistry
authors.forename: S
authors.initials: S
authors.lastname: Gujral
authors.forename: S
authors.initials: S
authors.lastname: Fattepurkar
mesh_terms: D000293:Adolescent; D017824:Bone Cysts, Aneurysmal / Q000473:pathology / Q000601:surgery*; D001859:Bone Neoplasms / Q000473:pathology / Q000601:surgery*; D002526:Cerebellar Diseases / Q000209:etiology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D010579:Petrous Bone / Q000473:pathology / Q000601:surgery*; D011183:Postoperative Complications; D014057:Tomography, X-Ray Computed