title: Thyrotrophin (TSH)-secreting pituitary macroadenoma with cavernous sinus invasion.
abstract: Thyrotrophin (TSH)-secreting pituitary adenomas, although rare, should be recognised as a possible cause of normal or elevated serum TSH in the presence of elevated serum free thyroid hormone levels. Clinical hyperthyroidism may be mild or absent. Early recognition provides the best chance for surgical cure. We report a patient with a TSH-secreting pituitary tumour with cavernous sinus invasion. This case illustrates that multiple modalities of treatment are often necessary and complementary in achieving control of tumour growth and hormonal hypersecretion when these tumours are diagnosed late.
authors.affiliation: Endocrine Unit, Department of General Medicine, Tan Tock Seng Hospital, Singapore.
authors.forename: Y C
authors.initials: YC
authors.lastname: Kon
authors.forename: K C
authors.initials: KC
authors.lastname: Loh
authors.forename: J A
authors.initials: JA
authors.lastname: Tambyah
authors.forename: L H
authors.initials: LH
authors.lastname: Lim
authors.forename: J C
authors.initials: JC
authors.lastname: Marshall
mesh_terms: D000236:Adenoma / Q000378:metabolism / Q000473:pathology* / Q000628:therapy; D002426:Cavernous Sinus / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D010911:Pituitary Neoplasms / Q000378:metabolism / Q000473:pathology* / Q000628:therapy; D013972:Thyrotropin / Q000378:metabolism*
chemical_list: D013972:Thyrotropin