Gardner Syndrome
Overview
Plain-Language Overview
Gardner Syndrome is a rare inherited condition that mainly affects the digestive system and the skin. It causes the growth of many polyps in the colon, which are small clumps of cells that can turn into cancer if not treated. People with this syndrome also develop benign tumors in other parts of the body, such as the bones and skin. These growths can cause problems like pain or deformities. The condition is caused by changes in a gene that controls cell growth, leading to uncontrolled growth of these polyps and tumors. Early detection is important because the colon polyps have a high risk of becoming colorectal cancer. Regular monitoring helps manage the condition and prevent serious complications.
Clinical Definition
Gardner Syndrome is an autosomal dominant disorder characterized by the presence of multiple adenomatous colorectal polyps with a high risk of malignant transformation. It results from mutations in the APC gene, a tumor suppressor gene that regulates cell proliferation and apoptosis. The syndrome is a variant of familial adenomatous polyposis (FAP) and is distinguished by extracolonic manifestations including osteomas, epidermoid cysts, and dental abnormalities. Patients often develop desmoid tumors and other soft tissue tumors. The major clinical significance lies in the near 100% risk of progression to colorectal adenocarcinoma if untreated. Surveillance and prophylactic colectomy are critical to prevent cancer development. Genetic testing for APC mutations confirms the diagnosis and guides family screening.