Thyroid in the Thigh – A Rare Presentation of Follicular Carcinoma

Abstract

Follicular carcinoma is the second commonest thyroid malignancy. Blood borne metastasis is common with spread to the lungs and bones. However, metastasis to the skeletal muscles is an extremely rare manifestation. Skeletal muscle metastasis is most commonly associated with papillary thyroid carcinoma and rarely with follicular carcinoma. Follicular carcinomas usually remain asymptomatic and are associated with poor prognosis. Here we present a case of 55 year old female with large neck and thigh swelling. Ultrasound guided fine needle aspiration cytology (FNAC) revealed it as follicular neoplasm with thigh metastasis.

Keywords

• thyroid
• follicular carcinoma
• fine needle aspiration cytology
• ultrasonography
• metastasis