A simple blood test is how you test for familial adenomatous polyposis to see if you carry the abnormal gene which causes familial adenomatous polyposis or FAP.
The familial adenomatous polyposis condition often appears in the teenage years.
And colon polyps in familial adenomatous polyposis often develop around age 16, although can also emerge as early as age 7.
And nearly 100 percent of people develop the polyps by age 35.
Symptoms like bleeding, abdominal pain or diarrhea with familial adenomatous polyposis often follow as the polyps grow, which is often between the ages of 8 to 20 years of age.
And early screening should also occur due to high colorectal cancer risk.
The average age for the polyps to begin with familial adenomatous polyposis is age 16, but they can also range from childhood age 7 to the late teens.
And over 95 percent of people also have multiple colon polyps by age 35 years.
And by the mid teens, rectal bleeding, abdominal pain, diarrhea and changes in your stool or poop can occur.
And if untreated it carries a 100 percent risk of colorectal cancer, with an average diagnosis age of 39.
Attenuated FAP is a milder form of familial adenomatous polyposis in which polyps develop later in fewer numbers.
And cancer risk is also lower and occurs later in life than classic FAP or familial adenomatous polyposis.
FAP or familial adenomatous polyposis is an inherited condition and genetic testing can also help to identify at risk children, often beginning surveillance around age 10.
And without any intervention like colon removal, colorectal cancer is also virtually certain in familial adenomatous polyposis.