title: Primary hypothyroidism mimicking a pituitary macroadenoma: regression after thyroid hormone replacement therapy.
abstract: We report a 9-year-old girl with pituitary hyperplasia due to primary hypothyroidism. She presented with growth arrest, abnormal thyroid function studies, and a pituitary mass on MRI. With thyroxine therapy, the pituitary mass regressed and her symptoms resolved. Primary hypothyroidism should be considered in the differential diagnosis of solid mass lesions of the pituitary gland.
authors.affiliation: Department of Neurosurgery, Wonkwang University School of Medicine, 344-2 Shinyong-dong, Iksan, 570-711, Korea.
authors.forename: Ki Seong
authors.initials: KS
authors.lastname: Eom
authors.forename: Choi
authors.initials: C
authors.lastname: See-Sung
authors.forename: Jong Duck
authors.initials: JD
authors.lastname: Kim
authors.forename: Jong Moon
authors.initials: JM
authors.lastname: Kim
authors.forename: Tae Young
authors.initials: TY
authors.lastname: Kim
mesh_terms: D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D020249:Hormone Replacement Therapy / Q000379:methods*; D006801:Humans; D007037:Hypothyroidism / Q000175:diagnosis* / Q000188:drug therapy*; D010911:Pituitary Neoplasms / Q000175:diagnosis*; D012074:Remission Induction; D013974:Thyroxine / Q000008:administration & dosage*; D016896:Treatment Outcome
chemical_list: D013974:Thyroxine