TY - CHAP M1 - Book, Section TI - Rectal Cancer A1 - Dooley-Hash, Suzanne A1 - Herrman, Nicholas W.C. A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason PY - 2021 T2 - The Atlas of Emergency Medicine, 5e AB - Rectal cancer is often asymptomatic, especially in early stages. It may also present with rectal mass, pain or bleeding, pain with passage of stool, anemia, or weight loss. More than 90% of cases occur in people over 50 years, and risk increases with age. Males are affected more commonly than females. Other risk factors include inflammatory bowel disease, family history of colorectal cancer or polyps, hereditary cancers such as familial adenomatous polyposis or hereditary nonpolyposis colorectal cancer (Lynch syndrome), low-fiber diet, and tobacco and alcohol use. There are multiple types of rectal cancers, with adenocarcinoma being the most common. SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/03/28 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1181041522 ER -