<prompt> Answer this question truthfullyIn what part of the body can lesions of Kaposi sarcoma be observed during an endoscopic examination?  <response>: <reason> Lesions of Kaposi sarcoma may be seen on endoscopic examination of the gastrointestinal GI tract. Kaposi sarcoma is a type of cancer that can affect the skin, mucous membranes, and internal organs. In people with HIVAIDS, Kaposi sarcoma is often associated with a weakened immune system. Endoscopic examination is a diagnostic procedure that allows doctors to view the inside of the GI tract using a flexible tube with a camera attached. If Kaposi sarcoma lesions are found during an endoscopic examination, a biopsy may be performed to confirm the diagnosis. Treatment options may include chemotherapy, radiation therapy, or surgery, depending on the location and extent of the cancer. 