[Idiopathic retroperitoneal fibrosis simulating pelvic tumor with distal ureter infiltration. Report of a case].

OBJECTIVE

To describe a case of idiopathic retroperitoneal fibrosis with an unusual form of presentation. Similar cases reported in the literature are briefly reviewed.

METHODS/

RESULTS

Herein we describe a 50-year-old female patient with idiopathic retroperitoneal fibrosis presenting as a single, unilateral, pelvic focus that enveloped and infiltrated the distal ureter. Treatment and outcome are described and the possible options in similar cases are discussed.

CONCLUSION

After discarding the more common causes of extrinsic or intrinsic ureteral obstruction, retroperitoneal fibrosis should be considered since it can mimic other conditions, as in the case described.