Brief communication: tamoxifen therapy for nonmalignant retroperitoneal fibrosis.

Background: Anecdotal case reports suggest tamoxifen as a possible treatment for retroperitoneal fibrosis, but a systematic assessment of its effect is not available.

Objective: To describe the course and outcomes of patients with nonmalignant retroperitoneal fibrosis treated with tamoxifen.

Design: Prospective, consecutive series.