[Sinugenic metastasis of bilateral renal cell carcinoma (hypernephroma)]

The paranasal sinuses are a rare location of metastases. The most frequent infraclavicular primary tumor is the renal cell carcinoma (hypernephroma). We report a case of a 64-old-woman with a bilateral renal cell carcinoma and metastases in the paranasal sinuses with destruction of the skull base. If symptoms such as progressive indolent periorbital swelling or intermittent epistaxis occur in adults, one should consider a metastasis of a renal cell carcinoma to the paranasal sinuses even 10 years after nephrectomy.