A primary or metastatic malignant neoplasm that affects the colon. Representative examples include carcinoma, lymphoma, and sarcoma. The disease is Monarch Disease Ontology id MONDO_0021063 (malignant colon neoplasm). Also known as: cancer of colon, colon cancer, colon neoplasm, malignant, colon tumor, malignant, malignant colon tumor, malignant colon tumour, malignant colonic neoplasm, malignant colonic tumor.