Detection of dysplasia in Barrett's esophagus with in vivo depth-resolved nuclear morphology measurements.

Published

Journal Article

Patients with Barrett's esophagus (BE) show increased risk of developing esophageal adenocarcinoma and are routinely examined using upper endoscopy with biopsy to detect neoplastic changes. Angle-resolved low coherence interferometry (a/LCI) uses in vivo depth-resolved nuclear morphology measurements to detect dysplasia. We assessed the clinical utility of a/LCI in the endoscopic surveillance of patients with BE.Consecutive patients undergoing routine surveillance upper endoscopy for BE were recruited at 2 endoscopy centers. A novel, endoscope-compatible a/LCI system measured the mean diameter and refractive index of cell nuclei in esophageal epithelium at 172 biopsy sites in 46 patients. At each site, an a/LCI measurement was correlated with a concurrent endoscopic biopsy specimen. Each biopsy specimen was assessed histologically and classified as normal, nondysplastic BE, indeterminate for dysplasia, low-grade dysplasia (LGD), or high-grade dysplasia (HGD). The a/LCI data from multiple depths were analyzed to evaluate its ability to differentiate dysplastic from nondysplastic tissue.Pathology characterized 5 of the scanned sites as HGD, 8 as LGD, 75 as nondysplastic BE, 70 as normal tissue types, and 14 as indeterminate for dysplasia. The a/LCI nuclear size measurements separated dysplastic from nondysplastic tissue at a statistically significant (P < .001) level for the tissue segment 200 to 300 μm beneath the surface with an accuracy of 86% (147/172). A receiver operator characteristic analysis indicated an area under the curve of 0.91, and an optimized decision point gave 100% (13/13) sensitivity and 84% (134/159) specificity.These preliminary data suggest a/LCI is accurate in detecting dysplasia in vivo in patients with BE.

Full Text

Duke Authors

Cited Authors

  • Terry, NG; Zhu, Y; Rinehart, MT; Brown, WJ; Gebhart, SC; Bright, S; Carretta, E; Ziefle, CG; Panjehpour, M; Galanko, J; Madanick, RD; Dellon, ES; Trembath, D; Bennett, A; Goldblum, JR; Overholt, BF; Woosley, JT; Shaheen, NJ; Wax, A

Published Date

  • January 2011

Published In

Volume / Issue

  • 140 / 1

Start / End Page

  • 42 - 50

PubMed ID

  • 20854820

Pubmed Central ID

  • 20854820

Electronic International Standard Serial Number (EISSN)

  • 1528-0012

International Standard Serial Number (ISSN)

  • 0016-5085

Digital Object Identifier (DOI)

  • 10.1053/j.gastro.2010.09.008

Language

  • eng