Establishing and popularizing a standard pathological diagnostic model of endoscopic submucosal dissection specimens in China

Figure 1 Improvement of endoscopic submucosal dissection specimen processing. A: Percentages of participants who obtained photographs of endoscopic submucosal dissection specimens during the specimen-handling process; B and C: Proportions of participants who were able to ensure that the tissue strips were straight and that the order of the tissue strips remained unchanged during the tissue embedding process. The black and gray bars indicate the ratios before and after training, respectively. ^aP < 0.01, ^bP < 0.001.

Figure 2 Improvements in the pathological diagnosis process. A: Common missing information in pathology reports: Gross type of lesion, lesion size, invasion pattern of cancerous tissue, and histologic type of cancerous tissue. Data includes the ratio of participants who correctly report the information in the pathology reports before (black bars) and after training (gray bars); B: The two columns on the left represent the percentages of participants who measured the depth of submucosal infiltration before and after training, and the right two columns show the percentages who adopted the immunohistochemical (IHC) staining of desmin; C: Percentages of pathologists who did not evaluate vascular invasion during the diagnostic process before and after training were shown with the left two columns; the right two columns show the percentages of pathologists who adopted IHC staining of D2-40/CD31 before and after training. SM: Submucosal; LVI: Lymphovascular invasion. ^aP < 0.001.

Figure 3 Closer integration between pathology and endoscopy. A: Percentage of trainees who had fixed clinico-pathological meetings before and after training; B: Ratio of trainees who understood the terms related to the endoscopic diagnosis of early gastrointestinal cancer, knew the endoscopic manifestations of the lesions, and frequently communicated with the endoscopist (black bar: Before training; gray bar: After training). ^aP < 0.001.