Fig. 1From: Collision tumor of a papillary and follicular thyroid carcinoma: a case reporta Representative imager of ultrasonography. A well-defined mass lesion in the right lobe of the thyroid gland (yellow arrow) and an indistinct mass lesion in the isthmus (white arrow) are demonstrated. b Representative image of CT scan. The tumor of right lobe of the thyroid gland (yellow arrow) and mass lesion in the isthmus (white arrow) are demonstratedBack to article page