Erratum Gastrointestinal Endoscopy   Gastrointestinal Endoscopy  Volume 78, Issue 2, Pages 389-390 (August 2013) DOI: 10.1016/j.gie.2013.05.030 Copyright © 2013 American Society for Gastrointestinal Endoscopy Terms and Conditions

Figure 2 Serrated lesions histological classification. A, Hyperplastic polyp comprising glands with serrations limited mostly to the upper one half of the crypts. Nonbranching narrow crypts at the bases are similar in diameter and shape to those of normal colon (Fig. 1A). B, C, Sessile serrated lesions. Serrated architecture at all levels of the crypts with broadened and irregular shape of their bottom parts. The basal portions of the crypts are branched, horizontal, and appear flask or T shaped (C); they are lined with a mixture of mature and dystrophic goblet cells. D, Sessile serrated lesion with focal dysplasia composed of nondysplastic sessile serrated component in the central part and dysplastic epithelial component at the right and left margins of the lesion. E, F, Traditional serrated adenoma. Serrated architecture with dysplastic hypereosinophilic cytoplasm and confluent nuclear stratification is visible. Premature tiny crypts (F) perpendicular to the longitudinal axis of the villi, called an ectopic crypt formation, are distinctive. G, H, Two examples of serrated lesions with focal dysplasia (mixed polyps). G, Nondysplastic hyperplastic upper left part and dysplastic component with morphology resembling traditional serrated adenoma on the right-hand side of the lesion. H, There are two dysplastic elements characteristic of traditional serrated adenoma on the lower right and conventional adenoma on the upper left. Gastrointestinal Endoscopy 2013 78, 389-390DOI: (10.1016/j.gie.2013.05.030) Copyright © 2013 American Society for Gastrointestinal Endoscopy Terms and Conditions

Figure 3 The diagram of 3 settings exemplifying serrated neoplasia according to Young and Jass.96 A, Hyperplastic/serrated polyposis (HPSP) where numerous serrated polyps develop and in which synchronous cancers may be present. B, Serrated pathway syndrome (SPS), which is a multicase and multigeneration colorectal carcinoma (CRC) predisposition associated with few advanced serrated polyps. C, Sporadic CpG island methylator phenotype (CIMP) CRC where no evidence of a family history is apparent. Gastrointestinal Endoscopy 2013 78, 389-390DOI: (10.1016/j.gie.2013.05.030) Copyright © 2013 American Society for Gastrointestinal Endoscopy Terms and Conditions