Primary malignant tumours of the small intestine.
D000230:Adenocarcinoma / Q000175:diagnosis; D000328:Adult; D000368:Aged; D002276:Carcinoid Tumor / Q000175:diagnosis; D005260:Female; D006801:Humans; D007414:Intestinal Neoplasms / Q000150:complications / Q000175:diagnosis*; D007421:Intestine, Small; D007890:Leiomyosarcoma / Q000175:diagnosis; D008223:Lymphoma / Q000175:diagnosis; D008297:Male; D008875:Middle Aged