Figure 2: A case of moderately differentiated adenocarcinoma with P-pattern. (a) Schema of gastric cancer with P-pattern submucosal invasion. (b) Endoscopic ultrasonography shows hypoechoic lesions in the third layer, which indicate focal submucosal invasion (white arrowhead). (c) HE staining (×100). Cancer cells focally invade to the submucosal layer like passing through the muscularis mucosae, which is maintained (black arrow-head).