Abstract
We report a case of metastasis of renal cell carcinoma to the posterior paranasal sinuses. A 75-year-old man who had had a left nephrectomy six months previously due to a renal cancer, visited our hospital with a complaint of severe nasal bleeding. On examination, he had a mass in the left olfactory cleft. CT and MRI showed an abnormal shadow occupying the bilateral sphenoid sinuses with extension to the left posterior ethmoid cells. A biopsy revealed a metastatic clear cell carcinoma from the renal cancer. The patient underwent selective intraarterial embolization of bilateral maxillary arteries and left ascending pharyngeal artery, followed by the removal of the tumor using a complete rhinotomy approach. He has remained well for 15 months postoperatively without evidence of recurrence.
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