Upper gastrointestinal Kaposi's sarcoma in HIV-infected patients: ten years of endoscopy observation at a single Brazilian center

Highlights • The study is original and describes the prevalence and clinical and pathological presentation of gastrointestinal Kaposi's sarcoma (GI KS) among HIV-infected patients undergoing upper endoscopy. • GI KS is an infrequent finding among HIV-infected patients. KS lesions were found mainly in the stomach. • Eighty percent of the HIV-infected patients with GI KS had concomitant skin lesions. • Immunohistochemical methods (CD31, CD34, and LNA-1) are important tools in the diagnosis of lesions suggestive of GI KS. • This study reports data about GI KS not yet published in our country, including the state of São Paulo.