Metastasis from renal cell carcinoma presenting as osteolysis in total hip arthroplasty: a case report.

We report a case of a pelvic metastasis from a renal carcinoma in association with a total hip arthroplasty. Mistakenly diagnosing such lesion as a granulomatous osteolytic foreign body reaction due to polyethylene debris may lead to devastating and uncontrollable haemorrhage during revision arthroplasty.