Crypt dysplasia with surface maturation: a clinical, pathologic, and molecular study of a Barrett's esophagus cohort

The American Journal of Surgical Pathology
Leslie C LomoRobert D Odze

Abstract

Little is known regarding the significance of esophageal biopsies that show dysplasia-like atypia limited to the bases of the crypts, without involvement of the surface epithelium in Barrett's esophagus (BE). The aim of this study was to evaluate the clinical, pathologic, immunohistochemical, and molecular characteristics of basal crypt dysplasia-like atypia (BCDA) with surface maturation in surveillance endoscopic mucosal biopsies to gain insight into its biologic significance. The Seattle Barrett's Esophagus Project is a prospective cohort study in which patients and their biopsies have been evaluated prospectively for clinical, pathologic, and molecular markers. As part of continued surveillance of the cohort, 206 consecutive BE patients were evaluated prospectively for BCDA between July 1, 2001 and August 13, 2003; 15 patients had BCDA (prevalence rate = 7.3%). These 15 patients were evaluated for clinical, pathologic, and immunohistochemical (p53 and MIB-1) features during the study period (2001-2003) as well as associations with clinical, pathologic, and molecular markers [17p(TP53) loss of heterozygosity (LOH), 9p(p16) LOH, tetraploidy, and aneuploidy] that were detected previously in the same patients in the cohort stud...Continue Reading

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