Unilateral ectopic kidney in the pelvis--a case report.

Abnormalities of the kidney and/or urinary tract are common, and are more common in males than females. We present a case of unilateral pelvic kidney on the left side in a 26-year-old man. A pelvic kidney is a rare entity with a low clinical incidence. An ectopic kidney is often associated with an increased incidence of stone formation as a result of stasis caused by the altered geometry of urinary drainage.