Abstract
This study focused on a rare case of an isolated renal hydatid cyst. A 58-year-old asymptomatic woman was referred to the urologic clinic after an abdominal computed tomography (CT) scan revealed a renal cystic mass. While immunologic tests were normal, the final diagnosis was a renal hydatid cyst after radical nephrectomy of the affected kidney. We believe isolated occurrence of hydatid cysts is rare.