title: Pituitary metastasis of follicular thyroid carcinoma.
abstract: OBJECTIVE
  The case of a 60-year-old male patient with follicular thyroid cancer who developed a pituitary mass proved to be a metastasis from thyroid cancer.
  
  
  METHODS
  Assessment with whole-body scan, ultrasound, computed tomography and thyroglobulin measurements.
  
  
  RESULTS
  Despite surgery and repeated doses of radioiodine, the patient developed diplopia and ptosis of the right eyelid, along with increasing thyroglobulin levels. A pituitary mass was discovered, with no signs of pituitary deficiency. The mass was removed and found to consist of neoplastic cells immunohistochemically positive to thyroglobulin.
  
  
  CONCLUSIONS
  Distant metastases may develop in cases of follicular thyroid carcinoma, even after repeated doses of (131)I. Metastatic follicular thyroid carcinoma to the pituitary is a rare entity.
authors.affiliation: Unit of Endocrinology and Endocrine Oncology, Theagenion Anticancer Hospital, 2 A. Simeonidi Street, GR-540 07 Thessaloniki, Greece. alexri@otenet.gr
authors.forename: Alexandra
authors.initials: A
authors.lastname: Chrisoulidou
authors.forename: Kalliopi
authors.initials: K
authors.lastname: Pazaitou-Panayiotou
authors.forename: Nikolaos
authors.initials: N
authors.lastname: Flaris
authors.forename: Apostolos
authors.initials: A
authors.lastname: Drimonitis
authors.forename: Iosifina
authors.initials: I
authors.lastname: Giavroglou
authors.forename: Eudoxia
authors.initials: E
authors.lastname: Ginikopoulou
authors.forename: Iraklis
authors.initials: I
authors.lastname: Vainas
mesh_terms: D018263:Adenocarcinoma, Follicular / Q000150:complications / Q000378:metabolism / Q000473:pathology* / Q000556:secondary* / Q000601:surgery; D001763:Blepharoptosis / Q000209:etiology; D004172:Diplopia / Q000209:etiology; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D010911:Pituitary Neoplasms / Q000150:complications / Q000378:metabolism / Q000473:pathology* / Q000556:secondary* / Q000601:surgery; D013954:Thyroglobulin / Q000378:metabolism*; D013964:Thyroid Neoplasms / Q000473:pathology*
chemical_list: D013954:Thyroglobulin