Monarch Disease Ontology term MONDO_0003796 (rectum Kaposi sarcoma) is a Kaposi sarcoma arising from the rectum. Also known as: Kaposi's sarcoma (disease) of rectum, Kaposi's sarcoma of rectum, Kaposi's sarcoma of the rectum, rectal Kaposi sarcoma, rectal Kaposi's sarcoma, rectum Kaposi's sarcoma (disease).