Complications of Familial Adenomatous Polyposis (FAP)
Familial adenomatous polyposis (FAP) can lead to various complications that affect different parts of the body. These complications include the development of both benign and malignant polyps in areas outside the colon and rectum. These polyps can occur in the small intestine, at the junction between the biliary system ducts and the small intestine, or on the inner wall of the stomach.
In addition to polyps, individuals with FAP may also experience recurring desmoid tumors. Desmoid tumors are benign fibrous growths that typically originate in the intestines but can spread to surrounding tissues, organs, and nerves.
FAP is also associated with an increased risk of cancer in other organs. People with FAP have a higher likelihood of developing thyroid cancer, cancer of the central nervous system, and liver cancer.
Diagnosing Familial Adenomatous Polyposis
Screening for familial adenomatous polyposis (FAP) is crucial for individuals with a family history of the condition. Early detection is key, as FAP can develop as early as the teenage years. Typically, screenings for FAP begin around the age of 12. Various imaging tests are available to identify polyps and confirm the presence of FAP.
Sigmoidoscopies and colonoscopies are commonly used procedures for detecting polyps. These involve the insertion of a thin tube, known as a scope, into the rectum and colon. Equipped with a light and camera, the scope allows doctors to thoroughly examine these areas for any abnormal growths. Another procedure, called esophagogastroduodenoscopy (EGD), is similar to sigmoidoscopy and colonoscopy. However, in EGD, the scope is inserted through the mouth and navigated through the digestive tract to reach the small intestine.