| Theme | Modality and new development in diagnosis for colorectal tumor -- with the aim of the improvement of a presence and qualitative diagnosis | |
|---|---|---|
| Title | The clinical usefulness of the JNET classification | |
| Publish Date | 2017/09 | |
| Author | Kyoku Sumimoto | Endoscopy and Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University |
| Author | Shinji Tanaka | Endoscopy and Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University |
| Author | Nana Hayashi | Endoscopy and Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University |
| Author | Yuki Ninomiya | Department of Gastroenterology & Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University |
| Author | Yuzuru Tamaru | Department of Gastroenterology & Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University |
| Author | Daiki Hirano | Department of Gastroenterology & Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University |
| Author | Shiro Oka | Department of Gastroenterology & Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University |
| Author | Kazuaki Chayama | Department of Gastroenterology & Metabolism, Graduate School of Biomedical & Health Sciences, Hiroshima University |
| [ Summary ] | The Japan NBI Expert Team (JNET) classification was proposed in 2014. JNET classification consists of four categories (Type 1, 2A, 2B, and 3) based on both vessel pattern and surface pattern. Type 1, 2A, and 3 are reliable indicators, with high diagnostic accuracy for hyperplastic polyp (HP)/sessile serrated polyp (SSP), low-grade intramucosal dysplasia (LGD), and deep submucosal invasive (SM-d) carcinoma, respectively. Therefore, Type 1 lesion can be followed-up without resection (some SSPs require resection), Type 2A lesion is a good indication for endoscopic treatment, and Type 3 lesion requires surgical resection. Otherwise, Type 2B lesion exhibits various types of histology from LDG to SM-d carcinoma. The diagnostic ability of Type 2B for high-grade intramucosal dysplasia (HGD)/superficial submucosal invasive (SM-s) carcinoma is insufficient. Pit pattern diagnosis should be done to make more precise diagnosis of Type 2B lesion in order to select an appropriate treatment method. | |