{"entity":{"id":"jnet-classification","kind":"term","name":"JNET classification (colorectal tumours on narrow-band imaging)","aka":["JNET classification","JNET type","Japan NBI Expert Team classification"],"tldr":"The JNET type (1, 2A, 2B or 3) is how an endoscopist describes a bowel growth seen with magnifying narrow-band imaging, and it predicts what the pathologist will find, from a harmless polyp to deep cancer.","summary":"The Japan NBI Expert Team unified several Japanese magnifying narrow-band imaging classifications into one (Sano and colleagues, Digestive Endoscopy 2016; proposed 2014). It has four categories of vessel and surface pattern, which correspond to: type 1, hyperplastic or sessile serrated polyp; type 2A, low-grade intramucosal neoplasia; type 2B, high-grade intramucosal neoplasia or shallow submucosal invasive cancer; type 3, deep submucosal invasive cancer.","asOf":"2026-11-04","links":[{"label":"Sano et al., Narrow-band imaging magnifying endoscopic classification of colorectal tumors proposed by the Japan NBI Expert Team (Dig Endosc 2016)","url":"https://doi.org/10.1111/den.12644"}],"tags":[],"related":["colonoscopy","paris-endoscopic-classification","vienna-classification"],"cancers":["colorectal"],"sections":[],"technologies":[],"targets":[],"drugs":[],"companies":[],"institutions":[],"pathways":[],"terms":[],"trials":[],"people":[],"bottlenecks":[],"keyPapers":[],"journals":[],"dependsOn":[],"notes":[],"category":"Diagnostics & imaging"},"route":"/terms/jnet-classification/","neighbours":{"term":[{"id":"colonoscopy","kind":"term","name":"Colonoscopy","route":"/terms/colonoscopy/"},{"id":"paris-endoscopic-classification","kind":"term","name":"Paris endoscopic classification of superficial neoplastic lesions","route":"/terms/paris-endoscopic-classification/"},{"id":"vienna-classification","kind":"term","name":"Vienna classification of gastrointestinal epithelial neoplasia","route":"/terms/vienna-classification/"}],"cancer":[{"id":"colorectal","kind":"cancer","name":"Colorectal cancer","route":"/cancers/colorectal/"}]}}