Hypothyroid Hashimoto's thyroiditis with scintigraphic and color flow doppler sonography features mimicking a hot nodule.
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.
Zengi
Ayhan
A
Division of Endocrinology and Metabolism, Department of Internal Medicine, University of Ege, Izmir, Turkey. aliyezengi@yahoo.com
Karadeniz
Muammer
M
Demirpolat
Gulgun
G
Akgun
Aysegul
A
Karakose
Suleyman
S
Yilmaz
Candeger
C
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
D007457:Iodine Radioisotopes; D013667:Technetium