갑상선에 동시에 발생한 여포암과 유두암 1예

Four types of thyroid cancer comprise more than 98% of all thyroid malignance. Among them, two or more distinct tumors could consist of concurrent pathologies as collision tumor of the thyroid gland. A 24-year-old female presented with thyroid mass. Physical exam revealed a 2 × 2 cm predominantly right sided thyroid mass that was confirmed on imaging. Ultrasound-guided fine needle aspiration suggested a suspicious for a follicular neoplasm. Consequently, she underwent total thyroidectomy with central neck dissection for follicular carcinoma of the right lobe of the thyroid gland. The pathology was reported as the right lobe was follicular carcinoma and the isthmus incidentally revealed a papillary carcinoma. We report a rare case of concurrent follicular and papillary carcinoma of the thyroid gland with a review of literature. (J Clinical Otolaryngol 2014;25:80-83)