Rectal Neoplasms Definition Terminology Encyclopedia Online
Colon and rectal cancer incidence was negligible before 1900.
Changing Trends in Sexual Behavior May Explain Rising Incidence of Anal Cancer Among American Men and Women.
The anal canal is about an inch and a half long. Its inner lining (called the mucosa) is made up of several different kinds of cells.
Almost all rectal cancers are primary adenocarcinomas. Adenocarcinoma of the rectum is a major cause of mortality and morbidity in North America and Western Europe.