1. Available from: https://seer.cancer.gov/statfacts/html/colorect.html.
2. Stanciu C, Trifan A, Khder SA. Accuracy of colonoscopy in localizing colonic cancer. Rev Med Chir Soc Med Nat Iasi. 2007;111(1):39–43.
3. Piscatelli N, Hyman N, Osler T. Localizing colorectal cancer by colonoscopy. Arch Surg. 2005;140(10):932–5.
4. Cho YB, Lee WY, Yun HR, Lee WS, Yun SH, Chun HK. Tumor localization for laparoscopic colorectal surgery. World J Surg. 2007;31(7):1491–5.
5. Hilliard G, Ramming K, Thompson J Jr, Passaro E Jr. The elusive colonic malignancy. A need for definitive preoperative localization. Am Surg. 1990;56(12):742–4.