Breast Cancer and Retroperitoneal Metastasis

Abstract
Retroperitoneal fibrosis is an uncommon disease of diverse etiology. Carcinoma of the breast is rarely considered as a cause of retroperitoneal metastasis or fibrosis. This paper describes 5 patients with retroperitoneal fibrosis secondary to breast cancer. The mean duration from initial diagnosis to onset of symptoms was greater than 10 yr. The patients had received a variety of treatments for breast carcinoma, and had extensive metastatic disease. Presenting symptoms included abdominal, flank or low back pain; two had small bowel obstruction and 4 had ureteral obstruction. With long-term survival this complication may be seen more frequently.

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