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Figure 5: The parts of gastric wall liable to involvement by the disease process (dotted line): (1) the posterior wall of the antrum in the vestibule of the omental bursa, (2) the mid-lesser curvature, which are invaded from the metastasis of lesser omentum, and (3) the upper greater curvature by the invasion from splenic hilar metastasis. Region 4 is named as superior omental recessus, which is frequently involved in pseudomyxoma peritonei.