Clinical presentation: A 70-year-old woman was referred for evaluation of a recurrent nodule. The patient underwent on bilateral resection 32 years ago. The histopathological diagnosis was not available. The patient noticed a suddenly evolved lump in the right side of the neck several weeks ago. The lump has a bit decreased since then.

Palpation: There was an elastic nodule in the right lobe.

Functional state: euthyroidism with TSH 0.27 mIU/L, FT4 15.5 pM/L.

Ultrasonography. The thyroid was moderately hypoechoic. A large cystic nodule occupied great part of the right lobe. There was a moderately hypoechoic solid nodule in the lower third of the right lobe. This lesion presented with taller-than-wide and taller-than-long shape and had both perinodular and intranodular vascularity.

Fifteen mL yellow fluid was removed from the cystic nodule. Cytology resulted in non-diagnostic cystic lesion.
FNA of the solid nodule in the lower third of the right lobe resulted in oxyphilic cell tumor.

Histopathology disclosed oxyphilic variant of a minimally invasive follicular carcinoma in the suspicious nodule. The other nodules proved to be hyperplastic nodules.