title: A case of painless thyroiditis in a very early stage of pregnancy.
abstract: We report a case of painless thyroiditis detected during the first trimester of pregnancy. A 29-year-old Japanese woman was hospitalized because of thyrotoxicosis and she was confirmed to be pregnant. The gestational age was 4 weeks. Blood examinations revealed negative TSH receptor antibodies, however, we started potassium iodide because we were unable to rule out Graves' disease. Thyroid hormone levels were normalized in 3 weeks and remained low even after discontinuation of medication. She received replacement therapy with levothyroxine sodium hydrate till 3 months after delivery. Painless thyroiditis can be one of the differential diagnoses of thyrotoxicosis in a very early stage of pregnancy.
authors.affiliation: Endocrinology and Metabolism, Showa University Fujigaoka Hospital, Japan. shiori-iida@tbr.t-com.ne.jp
authors.forename: Shiori
authors.initials: S
authors.lastname: Sato
authors.forename: Kei
authors.initials: K
authors.lastname: Endo
authors.forename: Toru
authors.initials: T
authors.lastname: Iizaka
authors.forename: Ryo
authors.initials: R
authors.lastname: Saiki
authors.forename: Kenji
authors.initials: K
authors.lastname: Iwaku
authors.forename: Shotaro
authors.initials: S
authors.lastname: Sato
authors.forename: Yasuyoshi
authors.initials: Y
authors.lastname: Takahashi
authors.forename: Fumiko
authors.initials: F
authors.lastname: Otsuka
authors.forename: Matsuo
authors.initials: M
authors.lastname: Taniyama
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000097:blood / Q000175:diagnosis* / Q000188:drug therapy; D011261:Pregnancy Trimester, First; D013963:Thyroid Hormones / Q000097:blood; D013966:Thyroiditis / Q000097:blood / Q000175:diagnosis* / Q000188:drug therapy; D013971:Thyrotoxicosis / Q000175:diagnosis / Q000188:drug therapy; D013974:Thyroxine / Q000627:therapeutic use; D016896:Treatment Outcome
chemical_list: D013963:Thyroid Hormones; D013974:Thyroxine