title: Primary hypothyroidism in a child mimicking a pituitary macroadenoma.
abstract: We report the case of an 11-year-old girl with primary autoimmune hypothyroidism causing secondary pituitary enlargement. She presented with headaches and a pituitary mass on MRI thought to be due to a pituitary macroadenoma. Resolution of the pituitary mass and symptoms occurred with thyroxine therapy. It is mandatory to rule out primary hypothyroidism as a cause of pituitary enlargement before surgery is considered.
authors.affiliation: Department of Paediatric Endocrinology, St. George's Hospital, London SW17 0QT, UK.
authors.forename: N W
authors.initials: NW
authors.lastname: Hopper
authors.forename: A
authors.initials: A
authors.lastname: Albanese
mesh_terms: D000236:Adenoma / Q000175:diagnosis*; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007037:Hypothyroidism / Q000175:diagnosis* / Q000188:drug therapy; D008279:Magnetic Resonance Imaging; D010902:Pituitary Gland / Q000473:pathology; D010911:Pituitary Neoplasms / Q000175:diagnosis*; D013974:Thyroxine / Q000627:therapeutic use
chemical_list: D013974:Thyroxine