E-Mail IMAGE: Example of one CT image and the corresponding output from the deep learning model view more Credit: SIAT Stomach cancer, or gastric cancer, is a common gastrointestinal malignancy. Peritoneal metastasis occurs in a majority of patients with advanced stomach cancer and is considered as an aggressive disease with poor outcomes. Patients with peritoneal metastasis are typically not eligible for curative surgery. Therefore, preoperative detection and diagnosis of peritoneal metastasis are critical to inform treatment decision-making and avoid unnecessary surgery. A new study published in the JAMA Network Open on Jan. 5 shows that deep learning can help predicting the occult peritoneal metastasis in stomach cancer. It provides a novel and noninvasive approach for stomach cancer patients and may inform individualized surgical management of stomach cancer.