Colorectal cancer is a malignancy of which regions?

• A. Malignancy of colon and rectum
• B. Benign tumor of colon
• C. Inflammation of colon
• D. Infection of rectum

Answer: (A)

Colorectal cancer is cancer that starts in the colon or rectum—the two regions of the large intestine. Malignancy means the cells have become invasive and capable of spreading, and in colorectal cancer these malignant growths typically arise in the mucosal lining and often develop from benign polyps over time. Because it specifically occurs in the colon and rectum, the description as a malignancy of those regions is the accurate one. The other options describe noncancerous or noninfectious processes (benign tumor, inflammation, infection) and do not represent cancer.