Lynch syndrome is a genetic condition that makes people more likely to develop certain cancers. People who have it also have about a 50% to 80% chance of getting colorectal cancer by age 70. They’re also at risk for cancers of the uterus, ovaries, and stomach. And they tend to get cancer at younger ages than other people, often in their 30s and 40s.
Lynch syndrome is sometimes called hereditary non-polyposis colorectal cancer (HNPCC), Muir-Torre syndrome, and Turcot syndrome.