colorectal neoplasm (Monarch Disease Ontology entry MONDO_0005335) is a benign or malignant neoplasm that affects the colon or rectum. Representative examples of benign neoplasms include lipoma and leiomyoma. Representative examples of malignant neoplasms include carcinoma, lymphoma, and sarcoma. Colorectal adenomas always exhibit epithelial dysplasia and are considered premalignant neoplasms. Also known as: colorectal tumor, colorectal tumour, colorectum neoplasm, colorectum neoplasm (disease), colorectum tumor, colorectum tumour, large bowel neoplasm, large bowel tumor.