Abstract
Objective: To review the literature with the aim of identifying the main complications resulting from colorectal cancer (CRC). Bibliographic review: CRC is a malignant tumor responsible for being the third leading cause of death associated with cancer in the world and in Brazil. CCR can be classified as hereditary or sporadic, the second one is the most prevalent. Due to a delayed diagnosis, there is an increased incidence of complications, such as: bowel obstruction, which reaches 24% prevalence in advanced stages of the disease; intestinal perforation as an incidence that can vary between 2.6% to 12%, and is also considered the most lethal because it is related to secondary peritonitis potentially lethal; and colorectal hemorrhage, which is a frequent complication that affect 50% of patients. Final Considerations: Point the importance of early CRC screening, in order to mitigate complications resulting from late identification and, in consequence, attenuate aggravations in the patient's prognosis.