[Laparoscopic approach to idiopathic retroperitoneal fibrosis].

A 49-year-old male patient underwent an exploratory laparoscopy for a lumbosacral prevertebral mass which caused right hydronephrosis by extrinsic ureteral stricture. The diagnosis of idiopathic retroperitoneal fibrosis (IRPF) was made by the laparoscopic biopsy. We then proceeded to perform successfully laparoscopic ureterolysis and intraperitonealization of the ureter on the patient. Laparoscopic approach provides a less invasive alternative in diagnosis and treatment of the patient with IRPF.