Renal hydatid cyst with loss of renal function

We report a case of an isolated hydatid cyst of the kidney, associated with loss of renal function; such a case has not been reported to the best of our knowledge. We performed a transperitoneal simple nephrectomy under general anesthesia after cyst aspiration and injection of scolicidal solution, followed by pericystectomy. In general, kidney-sparing surgery is the most appropriate treatment whenever possible, however in rare cases associated with loss of renal function nephrectomy is performed.