obsolete_colon carcinoma true A malignant tumor usually arising from the epithelium lining the large intestinal mucosa. Colon carcinoma is one of the most common malignancies in both males and females, and is especially common in North America and Europe. Grossly, most colon carcinomas are polypoid or ulcerating lesions. Microscopically, adenocarcinoma is the most frequently seen morphologic subtype. Prognosis depends on the stage of the disease (depth of invasion, metastasis to regional/distal lymph nodes or other anatomic sites). -- 2004 2.6.1 Use http://www.ebi.ac.uk/efo/EFO_0000365 colorectal adenocarcinoma SNOMEDCT:269533000 DOID:1520 NCIt:C4910 http://purl.obolibrary.org/obo/MONDO_0005008 James Malone true