Papillary Thyroid Carcinoma Metastatic to the Frontal Sinus and Frontal Recess: Case Report

We describe an extremely rare papillary thyroid carcinoma metastasic to the paranasal sinuses and our surgical management. A 39-year-old patient with a history of papillary thyroid carcinoma diagnosed five years earlier who presented with symptoms of chronic sinusitis. Medical imaging demonstrated opacification of the frontal sinuses and the anterior ethmoid sinus without signs of angiogenesis, bone destruction or calcification. Biopsy under general anesthesia revealed presence of papillary thyroid carcinoma cells. Treatment consisted in sinus endoscopic surgery with Draf III procedure followed by ¹³¹I therapy. To our best knowledge, this is the first described case of papillary thyroid carcinoma metastatic to the frontal sinus and frontal recess.