title: Malignant carcinoid tumor of the anterior mediastinum metastasis to a prolactin-secreting pituitary adenoma: a case report.
abstract: BACKGROUND
  Although the pituitary gland is known to harbor metastatic deposits, metastasis from a carcinoid tumor is extremely rare. Metastasis to a pituitary adenoma also is an infrequent occurrence.
  
  
  METHODS
  A case of malignant carcinoid tumor of the anterior mediastinum with metastasis to a prolactin-secreting pituitary adenoma is presented in this 46-year-old woman. This metastatic pituitary tumor demonstrated a high proliferative potential.
  
  
  CONCLUSIONS
  To our knowledge, this case represents the first documentation of metastasis from a malignant carcinoid tumor to a pituitary adenoma.
authors.affiliation: Department of Neurosurgery, Showa University School of Medicine, Tokyo, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Abe
authors.forename: K
authors.initials: K
authors.lastname: Matsumoto
authors.forename: M
authors.initials: M
authors.lastname: Iida
authors.forename: M
authors.initials: M
authors.lastname: Hayashi
authors.forename: N
authors.initials: N
authors.lastname: Sanno
authors.forename: R Y
authors.initials: RY
authors.lastname: Osamura
mesh_terms: D002276:Carcinoid Tumor / Q000556:secondary*; D005260:Female; D006801:Humans; D008479:Mediastinal Neoplasms / Q000473:pathology*; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000175:diagnosis; D010911:Pituitary Neoplasms / Q000556:secondary*; D015175:Prolactinoma / Q000175:diagnosis