| Theme |
Current destination of "de novo cancer" |
| Title |
Magnifying the endoscopic diagnosis of de novo cancer |
| Author |
Yuki Ninomiya |
Department of Endoscopy, Hiroshima University Hospital |
| Author |
Shiro Oka |
Department of Endoscopy, Hiroshima University Hospital |
| Author |
Katsuaki Inagaki |
Department of Gastroenterology and Metabolism, Hiroshima University Hospital |
| Author |
Yuki Okamoto |
Department of Endoscopy, Hiroshima University Hospital |
| Author |
Hidenori Tanaka |
Department of Gastroenterology and Metabolism, Hiroshima University Hospital |
| Author |
Kenta Matsumoto |
Department of Gastroenterology and Metabolism, Hiroshima University Hospital |
| Author |
Ken Yamashita |
Department of Endoscopy, Hiroshima University Hospital |
| Author |
Shinji Tanaka |
Department of Endoscopy, Hiroshima University Hospital |
| Author |
Kazuaki Chayama |
Department of Gastroenterology and Metabolism, Hiroshima University Hospital |
| [ Summary ] |
Depressed colorectal tumors are considered to be the origin of de novo cancer. We evaluated the rates of carcinoma and submucosal invasive carcinoma, further magnifying the NBI findings (JNET classification), and also performed the pit pattern diagnosis of depressed colorectal tumors. Depressed colorectal tumors resulted in higher rates of cancer and submucosal invasive cancer than flat or polypoid colorectal tumors, even though depressed colorectal tumors are small in size. According to the JNET classification, the rates of occurrence of type 2B and type 3 tumors are significantly higher with depressed colorectal tumors with a diameter of 10 mm or less than with flat and polypoid tumors. Regarding pit pattern diagnosis, the rates of IIIS, VI, and VN pit patterns were also significantly higher for depressed colorectal tumors than for flat and polypoid tumors. |