Fig. 3. A 24-year-old women with conventional papillary thyroid carcinoma that was diagnosed as Bethesda category VI (malignant) by fine-needle aspiration.

A, B. Ultrasonography (A, transverse; B, longitudinal view) shows a hypoechoic, irregular mass with gross invasion of the strap muscle (arrows). At surgery, central lymph node metastasis was also diagnosed.