[Metastasis in the frontal sinus from a clear cell renal carcinoma: description of a case and literature review].

The present paper reports a case of metastasis of renal adenocarcinoma in the frontal sinus in absence of symptoms related to the primary localization. The patient's advanced age and the extent of the tumor contraindicated any treatment and the decrease occurred six months after the diagnosis was reached. The authors point out that before an expansive lesion of nasal cavity and paranasal sinuses whose cytological examination is negative for squamous carcinoma, a metastasis from a renal or genito-urinary carcinoma should be suspected.