Clinical presentation: a 31-year-old woman was referred for an evaluation of a thyroid nodule that had been discovered 3 months before.

Palpation: a very firm nodule in the right lobe.

Functional state: euthyroidism (TSH 2.87 mIU/L).

Ultrasonography: a moderately hypoechogenic nodule with cystic degeneration in the right thyroid.

Cytology:  a very cellular pattern was found with atypical and pleomorphic follicular cells. They were arranged in micro- and normofollicles.

Cytological diagnosis: suspicion of follicular carcinoma.

Histopathology: a benign hyperplastic nodule. Dyshormonogenetic goiter.

Comment: for details of dyshormonogenetic goiter click here.

The patient was examined and operated in 1995, therefore the sonographic pictures are out of date.