Overgrowth Syndromes is a comprehensive clinical guide to the well-defined genetic disorders (and others that are less well-defined) for which somatic overgrowth is a major manifestation. It details the unique characteristics and known causative genes for this class of disorders, offering clinicians an expert resource for both clinical diagnosis and laboratory confirmation. Assembled by the world’s leading experts on overgrowth, this volume maximizes clinical utility without sacrificing nuance or rigor. It codifies the last decade’s sweeping advances in understanding general and segmental overgrowth, including the latter’s mosaic nature and phenotypic variability. It is an essential resource for clinicians navigating this set of conditions from clinical presentation all the way to counseling and anticipatory management.