What could be the cause of a 19 year old male getting colon cancr?

Answer: Colon cancer in a 19 year old rises the question of possible genetic mutation. Normally, people are screened for colon cancer at 50+ if at average risk. Those with known genetic mutations or syndromes known to predispose to colon cancer are screened earlier. If the patient has no other inborn/genetic syndromes, he may need to be tested for genetic mutations that led to it.

Inherited colon ca: Most colon cancer developed at young age are hereditary. Two most common genetic conditions are familial adenomatous polyposis(fap) and hereditary nonpolyposis colorectal cancer(hnpcc). Although some fap are hereditary there are some people who develop mutations without family history. When young person(<40yo) diagnosed with colon cancer tissue from tumor should be sent for specific genetic mutati.