Clinical data: A 50-year-old man was referred for an evaluation of a thyroid nodule. We aspirated 2.5 mL brown fluid form the cystic part of the nodule 3 months earlier. The cyst got refilled.

Hormonal investigation indicated euthyroidism.

Ultrasonography revealed a solitary cystic nodule with echonormal solid part.

FNA repeatedly not diagnostic.

Surgery was advised.

Intraoperative imprint cytology disclosed papillary carcinoma.

Histopathology: papillary cancer.