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Retroperitoneal fibrosis (RF) is a benign neoplasm consisting of a proliferation of fibroblasts and collagen fibrils.¹ Its cause is unknown in two thirds of the cases, while in the remaining cases it is associated with drugs, retroperitoneal hemorrhage, surgery, and other causes.² Until now, to our knowledge, it has never been observed in patients with human immunodeficiency virus (HIV) infection. We describe a patient with HIV infection who underwent successful treatment of RF with tamoxifen citrate without recurrence in the 5 years following treatment.

Report of a Case

A 20-year-old man was admitted to the hospital in November 1991 with a 3-day history of fever, aqueous diarrhea, rectal tenesmus, hypogastric pain, and dysuria. He also presented with a 2-month history of acute episodes of right flank pain. His medical history included hemophilia A and, in 1985, a hepatic lesion caused by a steel blade that required a laparotomy and multiple blood transfusions. In 1987 . . . [Full Text of this Article]

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