{"entity":{"id":"vienna-classification","kind":"term","name":"Vienna classification of gastrointestinal epithelial neoplasia","aka":["Vienna classification"],"tldr":"The Vienna classification gives pathologists five shared categories for biopsies of early growths in the gullet, stomach and bowel, from no neoplasia to invasive cancer.","summary":"Western and Japanese pathologists diagnosed the same gastrointestinal biopsies very differently: agreement was 37% for gastric, 45% for colorectal and 14% for oesophageal specimens. After 31 pathologists from 12 countries met in Vienna (Schlemper and colleagues, Gut 2000), agreement rose to 71%, 65% and 62% when the diagnoses were regrouped into five categories: 1 negative for neoplasia; 2 indefinite for neoplasia; 3 non-invasive low-grade neoplasia; 4 non-invasive high-grade neoplasia, including non-invasive carcinoma and suspected invasion; 5 invasive neoplasia, from intramucosal carcinoma to submucosal and beyond.","asOf":"2026-11-04","links":[{"label":"Schlemper et al., The Vienna classification of gastrointestinal epithelial neoplasia (Gut 2000)","url":"https://doi.org/10.1136/gut.47.2.251"}],"tags":[],"related":["paris-endoscopic-classification","jnet-classification","barretts-esophagus"],"cancers":["gastric","colorectal","esophageal"],"sections":[],"technologies":[],"targets":[],"drugs":[],"companies":[],"institutions":[],"pathways":[],"terms":[],"trials":[],"people":[],"bottlenecks":[],"keyPapers":[],"journals":[],"dependsOn":[],"notes":[],"category":"Pathology"},"route":"/terms/vienna-classification/","neighbours":{"term":[{"id":"barretts-esophagus","kind":"term","name":"Barrett's oesophagus","route":"/terms/barretts-esophagus/"},{"id":"jnet-classification","kind":"term","name":"JNET classification (colorectal tumours on narrow-band imaging)","route":"/terms/jnet-classification/"},{"id":"paris-endoscopic-classification","kind":"term","name":"Paris endoscopic classification of superficial neoplastic lesions","route":"/terms/paris-endoscopic-classification/"},{"id":"prague-c-and-m-criteria","kind":"term","name":"Prague C and M criteria (Barrett's oesophagus)","route":"/terms/prague-c-and-m-criteria/"}],"cancer":[{"id":"colorectal","kind":"cancer","name":"Colorectal cancer","route":"/cancers/colorectal/"},{"id":"gastric","kind":"cancer","name":"Gastric & gastro-oesophageal junction cancer","route":"/cancers/gastric/"},{"id":"esophageal","kind":"cancer","name":"Oesophageal cancer","route":"/cancers/esophageal/"}]}}