| Theme | <Comprehensible explanation> "JGES guidelines for colorectal endoscopic submucosal dissection/endoscopic mucosal resection" | |
|---|---|---|
| Title | Preoperative diagnosis of colorectal tumor -- A detailed explanation of "JGES guidelines for colorectal endoscopic submucosal dissection/endoscopic mucosal resection" | |
| Publish Date | 2015/09 | |
| Author | Hiro-o Yamano | Digestive Disease Center, Akita Red Cross Hospital |
| Author | Hiro-o Matsushita | Digestive Disease Center, Akita Red Cross Hospital |
| Author | Kenjiro Yoshikawa | Digestive Disease Center, Akita Red Cross Hospital |
| Author | Eiji Harada | Digestive Disease Center, Akita Red Cross Hospital |
| Author | Yoshihito Tanaka | Digestive Disease Center, Akita Red Cross Hospital |
| Author | Michiko Nakaoka | Digestive Disease Center, Akita Red Cross Hospital |
| Author | Yuko Yoshida | Digestive Disease Center, Akita Red Cross Hospital |
| Author | Kentaro Sato | Digestive Disease Center, Akita Red Cross Hospital |
| Author | Yasushi Imai | Digestive Disease Center, Akita Red Cross Hospital |
| [ Summary ] | Before performing colorectal endoscopic submucosal dissection (ESD)/endoscopic mucosal resection (EMR), qualitative diagnosis and determination of invading depth of the lesion are important for deciding a therapeutic strategy. Using magnifying and image-enhanced endoscopy, the rate of accurate discrimination between tumors and non-tumors was approximately over 95 %, and that between benign (adenoma) and malignant tumors (carcinoma) was 70-90 %. However, the accurate diagnosis rate of deep SM invasion is 70-80 % in standard or chromoendoscopic observation, approximately 90 % in type Vn pit pattern-based diagnosis, and approximately 80 % in ultrasonic endoscopic diagnosis. These diagnostic methods have certain advantages and disadvantages. Since diagnostic accuracy differs according to the macroscopic type and growth type of the lesion, appropriate diagnostic methods should be combined as required. |
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