(HealthDay News) -- Some people are at high risk for colorectal cancer because of a genetic mutation known as Lynch syndrome.
People with Lynch syndrome have more than an 80 percent chance of developing colorectal cancer, usually at a younger age than colorectal cancer attributed to other causes, according to the Mayo Clinic.
Lynch syndrome is responsible for about 3 percent to 4 percent of colorectal cancer cases, the Mayo Clinic says.
Symptoms of Lynch syndrome, typical of colorectal cancer in general, include:
- Constipation or diarrhea that persists for several days.
- Visible blood in the stool.
- Abdominal cramps or pain.
- Fatigue or weakness.
- Loss of appetite.
- Unexplained weight loss.
Genetic testing can determine if you have the disorder.
