Assessment of the diagnostic performance and interobserver variability of endocytoscopy in Barrett’s esophagus: A pilot ex-vivo study

Figure 1 Classification of endocytoscopic images of Barrett’s esophagus. A: Squamous epithelium (BEC 1) Cytoplasm-rich, rhomboid cells in a regular pattern; B: Barrett’s esophagus without dysplasia (BEC 2) Increased cell number and different-sized nuclei/cells; C: Barrett’s esophagus with dysplasia (BEC 3) Increased nucleus-cytoplasm ratio, and dense chromatin and nuclear fission are prominent; D: Esophageal adenocarcinoma (BEC 4) Cells of various sizes, irregularly arranged, with blurred and enlarged nuclei (magnification × 1125).