Abstract
There have been few reports about the synchronous occurrence of different types of thyroid carcinoma in a thyroid. We herein report a case in which follicular and papillary thyroid carcinoma were simultaneously found with bone metastasis. The case was a 69-year-old male with right omalgia. He underwent a medical examination in our orthopedics department, and was diagnosed to have a right humerus metastasis, which was found to be from thyroid carcinoma. The thyroid had three tumors, one in the right upper lobe, one in the right lower lobe and one in the isthmus, and all tumors were suspected to be papillary carcinoma based on the fine needle aspiration biopsy cytology. The metastatic bone tumor of the right humerus was removed first. In the histopathological examination,the bone tumor was diagnosed as a metastasis of follicular thyroid carcinoma. After the patient was transferred to our otorhinolaryngology department, we performed a total thyroidectomy and bilateral paratracheal lymph node dissection. According to a histopathological examination, the right upper lobe and isthmus tumors were diagnosed as papillary carcinoma, and the right lower lobe tumor was diagnosed as follicular carcinoma. Following the operation,we performed radioactive iodine therapy, and see him regularly for follow-up examinations.
