title: Myelopathy and sciatica induced by an extradural S1 root haemangioblastoma.
abstract: Haemangioblastomas are vascular tumours which mainly involve the central nervous system and retina, often in the setting of von Hippel-Lindau disease. Haemangioblastomas occurring outside the central nervous system are uncommon. Wherever it is, recognising this tumour prior to surgery is desirable, as preoperative embolisation may be considered. We report the clinical, imaging and pathological features of a sporadic sacral root haemangioblastoma in a 58-year-old man with chronic sciatica and myelopathy. The diagnosis was questioned preoperatively because an enlarged sacral foramen, seen to be filled by a highly vascular, enhancing mass and dilated vessels. Myelopathy was attributed to the presumed high venous pressure resulting from increased flow in veins draining the vascular tumour. Microneurosurgical excision was performed after endovascular embolisation and led to persistent clinical improvement.
authors.affiliation: Department of Radiology, Hôpital Neurologique et Neurochirurgical P. Wertheimer, 69394 Lyon, France. marc.hermier@club-internet.fr
authors.forename: M
authors.initials: M
authors.lastname: Hermier
authors.forename: F
authors.initials: F
authors.lastname: Cotton
authors.forename: G
authors.initials: G
authors.lastname: Saint-Pierre
authors.forename: A
authors.initials: A
authors.lastname: Jouvet
authors.forename: P
authors.initials: P
authors.lastname: Ongolo-Zogo
authors.forename: G
authors.initials: G
authors.lastname: Fischer
authors.forename: J C
authors.initials: JC
authors.lastname: Froment
mesh_terms: D002528:Cerebellar Neoplasms / Q000150:complications* / Q000175:diagnosis*; D003937:Diagnosis, Differential; D004388:Dura Mater / Q000098:blood supply* / Q000473:pathology*; D018325:Hemangioblastoma / Q000150:complications* / Q000175:diagnosis*; D006801:Humans; D017116:Low Back Pain / Q000209:etiology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012585:Sciatica / Q000209:etiology*; D013118:Spinal Cord Diseases / Q000209:etiology*; D014057:Tomography, X-Ray Computed