An epidemic tumour.
D000163:Acquired Immunodeficiency Syndrome / Q000150:complications / Q000175:diagnosis*; D000328:Adult; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis / Q000209:etiology*; D006801:Humans; D008297:Male; D012514:Sarcoma, Kaposi / Q000175:diagnosis / Q000209:etiology*