Medicina clinica
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Observational Study
[Hyperplastic polyposis syndrome: phenotypic diversity and association to colorectal cancer].
Hyperplastic polyposis syndrome (HPS) is an uncommon disorder characterized by hyperplastic polyps (HP) occasionally associated with serrated adenomas (SA) or mixed polyps (MP) and defined by clinical criteria (OMS/Cleveland). HPS is heterogeneous regarding the number and size of polyps, and it is associated with colorectal cáncer (CRC) and a family history. Its genetic basis is unknow. We describe individuals with HPS criteria from a series of families assessed in our Unit of Genetic Advice for colonic polyposis. Our objective is to identify the clinical characteristics of this syndrome. ⋯ The phenotypic variability of HPS difficults its identification, hence it is important to adhere to the clinical criteria established for its classification as well as to establish screening guidelines for CRC on the basis of its high incidence.