Data
Clinical presentation. A 60-year old woman was referred for aspiration cytology. She has been treated for relapsing hyperthyroidism for 3 years. Scintigraphy disclosed a uniform uptake while a large nodule was found on ultrasound.
Palpation: both lobes were enlarged, no discrete nodule could be palpated.
Laboratory test: TSH 0.001 mIU/L, FT4 22.9 pM/L, FT3 4.10 pM/L, TSAb negative, aTPO 22 U/mL on daily 15 mg methimazole.
Lesion in question:
the large lesion in the lower part of the right lobe.