RENAL-CELL CARCINOMA METASTATIC TO THE ET HMOID AND FRONTAL SINUSES

Metastatic lesions represent 1-8% of all malignant tumors of the mouth and jaws, with rare sites of metastasis originating from different pr imary tumors, especially the lung and breast. The vast majority of the se lesions (up to 90%) have been observed in the mandible and maxilla (5-2O%). Another rare type of cancer that usually metastasizes to the lungs, lymph nodes, bones, liver or brain may occasionally also show s pread to the paranasal sinuses. In the present paper we report our man agement of a 5-year-old male with renal cell carcinoma who developed m etastases to the frontal and ethmoid sinuses.