The purpose of this study is to establish a registry of families who are affected with various forms of hereditary colorectal cancer. This registry will help researchers learn more about the genetic causes of colorectal cancer and aid in the development of new ways to prevent, diagnose, and treat colon and rectal cancers. Participation in the Hereditary Colorectal Cancer Family Registry can be educational for families by helping them learn more about their colorectal cancer risk. For patients already diagnosed with a hereditary colon cancer, the registry will help to keep them abreast of new research that may affect their medical care.
Study participants will complete one questionnaire about their medical history and another about their family history of cancer. Participants may be contacted periodically in the next several years so researchers can follow-up on their health status.