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[Kaposi's sarcoma located in the upper digestive tract. Apropos a case].

A case of rectal and gastric location of Kaposi's sarcoma is reported. Although the typical location is cutaneous, gastrointestinal involvement of Kaposi's sarcoma is not an uncommon finding. Usually, it is detected when endoscopic, radiologic and autopsy studies are performed in patients with previous AIDS diagnosis. The patient we herein report ignored to be affected by the human immunodeficiency virus (HIV). He had not shown any sign or symptom for AIDS to be suspected. Presenting symptoms were weight loss, asthenia, loss of appetite, diarrhea and rectal bleeding. This case report underlines the importance of differential diagnosis with other rectal neoplasms that call for a totally different therapeutic approach.