About colon cancer...please help?

....I am male 29....In my dads side there is no cancer ,,,but moms sideshe had a breast cancer her mother had ovarian cancer and my uncle had a breast cancer and ,,surprisingely three months ago my sister 34 dignosed with colon cancer..and after her dignosis i had to do a colonscopy and everything was fine ,,,,,, so whats my chances of getting colon cancer or any cancer??....
the white house guy who died yesterday of colon cacncer ..his mom died of colon cancer so he knew he had to do a regular screnning ,,,so if he had done that and knew he is at risk ,,,how come it was so late for his treatement and the cancer ended up spread and killed him??....I thought if u keep screnning it its likely to catch it early and cure it ,,,I am just confused about this so ,,please explain

See this editorial for detailed info - http://www.annalssurgicaloncology.org/cg...

You have already had a colonoscopy at age 29, so you and your physicians are aware of the familial risk. You must have seen a specialist to have the colonoscopy done. That physician should be advising you regarding the intervals for repeat testing. That doctor should also be explaining your relative risks in regards to the family history.

It's best to have a list of questions when you see your doctor(s), and especially when you see the specialist who does your colon exams it is a good idea to have a close friend or family member along to hear the explanation.

Explanations are part of our job as doctors. It takes time, but it is important. I always tried to explain things as carefully as possible in terms people could understand, but people often have trouble remembering the details.

The doctors who know your full history and your family's history should be giving this advice. If you have regular screening to detect any possible developing colon malignancy early, you should be able to have it detected at a curable stage.

Added note regarding one of the other answers - Tony Snow's liver malignancy was his colon cancer. When colon cancer spreads to other organs, it is still the same colon cancer. It does not become "liver" cancer. This is a common misunderstanding.

Your young but cancer does run in your family. Just continue to get tested. The early it is caught, the better your chances are. I am sorry to hear about your family. I have included a link for you to read up on colon cancer.

He had had colon cancer earlier and had been treated for it. The colon cancer was cured but he had a liver met and that is what killed him.. The found it because he had been screened. The American Cancer society has guidelines for doctors as to when men and women should have screenings and how often

good question. i am guessing he did not get regular check ups- but i don't know for sure. colon cancer if found early is very treatable. most people are embarrassed to get a colonoscopy or to even ask for one.