Fig. 1From: Correlation between preoperative ultrasonic features of medullary thyroid carcinoma and postoperative recurrenceUltrasonic characteristics of the MTC tumor: a1 and a2 show tumor size> 40.0 mm; b1 and b2 show capsular invasion; c1 and c2 show metastatic cervical lymph nodes: the lymph nodes appear enlarged, roundBack to article page