An Unusual Presentation Of Metastatic Renal Cell Carcinoma To The Frontonasal Region: A Case Report

The paranasal sinuses are a rare location of metastases. The most frequent infraclavicular primary tumor to metastasize to nose and paranasal sinuses is the renal cell carcinoma. To the best of our knowledge this is the first case in the English literature of bilateral renal cell carcinoma with metastases in the paranasal sinuses and destruction of the skull base in a 65-old-man. This patient had a primary renal cell carcinoma on the left side for which he had undergone left nephrectomy 15 year back. Right side renal cell carcinoma was diagnosed only after the patient had developed symptoms secondary to his metastases. The patient presented with an unusual manifestation of right frontal swelling and proptosis. The patient was offered palliative interferon therapy for 2 months after which he was lost to follow up.