title: Spindle cell oncocytoma of the adenohypophysis in a woman: a case report and review of the literature.
abstract: BACKGROUND
  Spindle cell oncocytoma of the adenohypophysis is a rare tumour recently reported by Roncaroli et al. in 2002. This tumour is considered a grade I tumour by the World Health Organization.
  
  
  METHODS
  We describe what is, to the best of our knowledge, the 14th case of its kind in the literature. A 45-year-old African woman presented clinical and radiological findings related to a nonfunctioning pituitary adenoma. The diagnosis was made on the basis of histological and immunohistochemical findings.
  
  
  CONCLUSIONS
  The purpose of this work is to report a rare pituitary tumour and to describe its histological and immunohistochemical features, which were characterized by the expression of thyroid transcription factor 1 antigen by tumour cells. This fact could support the theory of a possible common origin of these tumours in pituicytomas. In fact, thyroid transcription factor 1 is considered to be a specific marker of pituicytes.
authors.affiliation: Department of Pathology, La Rabta Hospital, Bab Saadoun, Tunis 2037, Tunisia. mlika.zorgati.mona@hotmail.com.
authors.forename: M
authors.initials: M
authors.lastname: Mlika
authors.forename: H
authors.initials: H
authors.lastname: Azouz
authors.forename: I
authors.initials: I
authors.lastname: Chelly
authors.forename: I Ben
authors.initials: IB
authors.lastname: Saïd
authors.forename: H
authors.initials: H
authors.lastname: Jemel
authors.forename: S
authors.initials: S
authors.lastname: Haouet
authors.forename: M
authors.initials: M
authors.lastname: Zitouna
authors.forename: N
authors.initials: N
authors.lastname: Kchir