Research in Medicine

  Thyroid hemiagenesis with or without isthmus is a rare congenital disorder. Papillary thyroid carcinoma associate with hemiagenesis is very rare. A 42 years old female with chief complain of cervical mass was referred to our center. In physical examination, she had a 1.5 × 1.5 nodule in right lobe of thyroid. The result of thyroid nodule fine needle aspiration was reported papillary thyroid carcinoma. The right thyroid lobe was resected but there was not any trace of thyroid in left side and isthmus on trachea. In thyroid scan that was achieved one month later, iodine absorption was observed only in right thyroid bed. As a result the left lobe thyroid hemiagenesis and isthmus were approved. The final pathology report was thyroid papillary carcinoma. It was a rare case of thyroid hemiagenesis associate with thyroid papillary carcinoma that usually diagnosed accidentally.