METASTATIC FOLLICULAR THYROID-CARCINOMA TO THE PARANASAL SINUSES - A CASE-REPORT AND REVIEW

Thyroid carcinoma metastatic to the paranasal sinuses is extremely rar e, with only 11 cases reported in the English and European literature. We report a case of metastatic follicular thyroid carcinoma to the cl ivus with extension into the sphenoid and posterior ethmoid sinuses. P athological diagnosis was obtained using an intranasal endoscopic biop sy. As with our patient, metastatic thyroid carcinoma may present with symptoms related to distant metastases rather than the primary lesion . Distant metastases in differentiated thyroid carcinoma portends a po or prognosis. Our case of metastatic thyroid carcinoma to the paranasa l sinuses is summarized in the context of the 11 additional cases, and treatment options are discussed.