title: Sellar neuroblastoma mimicking pituitary adenoma.
abstract: OBJECTIVE
  Primary intracranial neuroblastomas are rare. They generally arise in the supratentorial parenchyma or paraventricular region. Even more rare are primary sellar neuroblastomas. We present a neuroblastoma that arose in the sellar region and mimicked a non-functioning pituitary adenoma.
  
  
  METHODS
  This 33-year-old man presented with bitemporal hemianopsia. MRI showed a sellar mass with suprasellar extension mimicking a pituitary adenoma.
  
  
  METHODS
  Because of tumor recurrence and dissemination to the cervical region, he underwent 6 operations and radiosurgery. Detailed histologic examination confirmed the diagnosis of neuroblastoma. Postoperative conventional radiotherapy was effective in reducing the size of the tumor.
  
  
  CONCLUSIONS
  Neuroblastoma should be considered in the differential diagnosis of patients with sellar lesions.
authors.affiliation: Department of Hypothalamic & Pituitary Surgery, Toranomon Hospital, Minato-ku, Tokyo, Japan. ko-neuro@nms.ac.jp
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Oyama
authors.forename: Shozo
authors.initials: S
authors.lastname: Yamada
authors.forename: Masaaki
authors.initials: M
authors.lastname: Usui
authors.forename: Kalman
authors.initials: K
authors.lastname: Kovacs
mesh_terms: D000236:Adenoma / Q000175:diagnosis; D000328:Adult; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000532:radiotherapy / Q000601:surgery; D009447:Neuroblastoma / Q000175:diagnosis* / Q000532:radiotherapy / Q000601:surgery; D010911:Pituitary Neoplasms / Q000175:diagnosis* / Q000532:radiotherapy / Q000601:surgery