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Renal cell carcinoma has a high propensity for metastatic spread. There are several case reports of metastatic renal cell carcinomas associated with rare metastatic sites, in many cases more than ten years after the initial diagnosis. We present a 60-year-old man with perianal pain and a mass in the ischiorectal space, revealed by computed tomography. The patient had a history of clear cell renal carcinoma operated on 17 years ago. A wire localization surgical excision of the ischiorectal fossa mass was performed. The pathological report revealed a metastatic clear cell renal carcinoma. To our knowledge, this is the first case of a clear cell renal carcinoma metastasizing to the ischiorectal fossa reported in the literature. We therefore recommend that any newly discovered mass in any site of a patient with a history of renal cell carcinoma should be carefully explored and biopsied.

annals of the royal college of surgeons of england

First report of clear cell renal carcinoma metastasizing to the ischiorectal fossa 17 years after radical nephrectomy: an additional reason for lifelong follow-up