Colorectal cancer is exceptionally rare in people younger than 20, but a new study finds that most cases in children and teenagers are aggressive and often diagnosed at advanced stages.

Colorectal cancer is exceptionally rare in people younger than 20, but a new study finds that most cases in children and teenagers are aggressive and often diagnosed at advanced stages. ↧ When teens get colorectal cancer, it’s often an aggressive form o... Colorectal cancer in teens is extremely rare. But when cases are diagnosed, they’re often advanced and more difficult to treat.