Fig. 2From: Establishment and verification of prediction model of occult peritoneal metastasis in advanced gastric cancerEndoscopic exploration and occult peritoneal metastasis (OPM) score of the peritoneum attached to the organs or tissues. A Peritoneal malignant nodules. B Malignant ascites in the abdominal cavity. C Computed tomography (CT) findings that correspond to the aforementioned criteria. The degree of metastasis is displayed from light to severeBack to article page