| [ Summary ] |
The depressed type of colorectal tumor is generally considered to be a rare lesion. Therefore, I believe that the younger generation is less aware of this disease. Therefore, we analyzed the endoscopic quality indicators to diagnose adenoma/early cancer and depressed type of colorectal tumor using the endoscopic diagnostic database from the past 5 years, and examined the inter-observer and -generation gaps. As a result, the polyp detection rate (PDR) and number of polyp per colonoscopy (PPC) for adenomas/early cancer exhibited an increasing trend with each generation. The correct diagnosis rate of depressed lesions and number of depressed lesions per colonoscopy (DPC) were found to be correlated. A correlation was also found between these three indicators, suggesting that the indicators and experience were the important factors for detecting depressed lesions. Additionally, since there were individual differences in the quality indicators within the same inspection field and generation, it was possible to reconfirm that the depressed lesions were overlooked. |