경부림프절 전이암의 역형성 변화를 동반한 갑상선 유두상 암종 1 치험예

A case of thyroid carcinoma with an area of anaplastic transformation in the cervical lymph node metastasis is reported. A 66-year-old female presented anterior neck mass for 1 month and undertaken total thyroidectomy and central neck dissection for the paratracheal lymph node metastasis. In the histopathologic findings, tumor of the left thyroid gland showed papillary carcinoma and the paratracheal lymph node showed undifferentiated carcinoma which was thought as anaplastic transformation of papillary carcinoma. There is no evidence of recurrence after 24 months. (J Clinical Otolaryngol 2004;15:146-149)