There are multiple hereditary and non-hereditary polyposis syndromes that were originally categorized as adenomatous or hamartomatous. More recently, serrated polyps and their syndromes have been defined. Nearly all of these syndromes have a risk of colorectal cancer in the individuals and affected family members. Most of these syndromes are associated with extracolonic manifestations, including extracolonic tumors.
Citation: Huber AR, Findeis-Hosey JJ, Whitney-Miller CL (2013) Hereditary Gastrointestinal Polyposis Syndromes: A Review Including Newly Identified Syndromes J Gastroint Dig Syst 3:155. doi: 10.4172/2161-069X.1000155