title: Extraventricular neurocytoma of the sellar region with spinal dissemination.
abstract: Extraventricular neurocytoma (EVN) is a rare tumor that mainly occurs in the cerebral hemispheres and spinal cord. Sellar neurocytoma is extremely rare, with only two previously reported cases. We report a sellar EVN in a 48-year-old man presenting with visual impairment. This tumor was partially resected. The residual tumor disappeared on MRI with adjuvant radiotherapy. However, 2 years later the tumor recurred with craniospinal dissemination, which is also very rare, with only four previously reported cases. The recurrent tumor showed atypical features with an MIB-1 LI score of 3 %. It is suggested that postoperative adjuvant radiation therapy with long-term follow-up is required for incompletely resected EVN.
authors.affiliation: Department of Neurosurgery, Shizuoka Red Cross Hospital, 8-2 Ottecho, Aoi-ku, Shizuoka, 420-0853, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kawaji
authors.forename: Osamu
authors.initials: O
authors.lastname: Saito
authors.forename: Shinji
authors.initials: S
authors.lastname: Amano
authors.forename: Masao
authors.initials: M
authors.lastname: Kasahara
authors.forename: Satoshi
authors.initials: S
authors.lastname: Baba
authors.forename: Hiroki
authors.initials: H
authors.lastname: Namba
mesh_terms: D001932:Brain Neoplasms / Q000150:complications / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009364:Neoplasm Recurrence, Local; D018306:Neurocytoma / Q000150:complications / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D019635:Neurosurgical Procedures; D018714:Radiotherapy, Adjuvant; D012658:Sella Turcica; D013120:Spinal Cord Neoplasms / Q000473:pathology*; D013997:Time Factors; D014786:Vision Disorders / Q000209:etiology