Patients with EOCRC have a higher relative prevalence of inherited predisposition to cancer, with Lynch syndrome being the most common cause.
Colorectal cancer in younger people
Similar factors increase the risk of early-onset colorectal cancer (EOCRC) and later-onset colorectal cancer (LOCRC), such as a sedentary lifestyle, obesity, and metabolic syndrome, but there are also important differences. EOCRC predominantly occurs on the left side of the colon and the rectum, whereas LOCRC arises more commonly on the right side of the colon. EOCRC is also more poorly differentiated and often metastatic at diagnosis.
Research is urgently needed to understand the increasing incidence of EOCRC and its pathophysiology to better detect and treat patients.
Lynch Syndrome Ireland 