title: Hypothyroid Hashimoto's thyroiditis with scintigraphic and color flow doppler sonography features mimicking a hot nodule.
abstract: We report a 59-year-old woman who had Hashimoto's thyroiditis (HT) with hypothyroidism. A solid hypervascularized nodule in the right lobe was detected by color flow doppler sonography (CFDS). Thyroid (99m)Tc pertechnetate scintigraphy revealed a hot area in the right lobe. After three months, thyroid function tests also revealed hypothyroidism and (131)I scintigraphy was similar to the previous scintigraphy. No nodular or hypervascularized lesion in the right lobe could be identified at the sixth month of L-T4 substitution therapy. In conclusion, HT may present as a single hot nodule and hypothyroidism. Imaging findings of HT should be carefully evaluated for the precise diagnosis.
authors.affiliation: Division of Endocrinology and Metabolism, Department of Internal Medicine, University of Ege, Izmir, Turkey. aliyezengi@yahoo.com
authors.forename: Ayhan
authors.initials: A
authors.lastname: Zengi
authors.forename: Muammer
authors.initials: M
authors.lastname: Karadeniz
authors.forename: Gulgun
authors.initials: G
authors.lastname: Demirpolat
authors.forename: Aysegul
authors.initials: A
authors.lastname: Akgun
authors.forename: Suleyman
authors.initials: S
authors.lastname: Karakose
authors.forename: Candeger
authors.initials: C
authors.lastname: Yilmaz
mesh_terms: D005260:Female; D050031:Hashimoto Disease / Q000000981:diagnostic imaging*; D006801:Humans; D007037:Hypothyroidism / Q000000981:diagnostic imaging*; D007457:Iodine Radioisotopes; D008875:Middle Aged; D055420:Perfusion Imaging; D013667:Technetium; D014463:Ultrasonography
chemical_list: D007457:Iodine Radioisotopes; D013667:Technetium