[Retroperitoneal fibrosis secondary to gastric neoplasia].

The retroperitoneal fibrosis is a very little frequent pathology that habitually includes the abdominal aorta and ureters. Two thirds of cases the etiology is idiopathic and in a third it is secondary to other causes as drugs, generalized infections or diseases and tumors which are considered to be responsible from 8 to 10%. The most frequent is colorectal adenocarcinoma, being anecdotal the gastric location with six described cases to date. We present a case of a patient with gastric cancer and secondary retroperitoneal fibrosis of difficult diagnosis and handling.