Fig. 1

Baseline data of the patient. A Gastric ulcer found during gastroscopy. B Pathological findings (gastric antrum) adenocarcinoma, part of which showed signet ring cell carcinoma differentiation. C After more than a year of treatment, the gastric ulcer lesions (cancer) disappeared in April 2021. D The antrum mucosal tissue is inflammatory, and the glandular epithelium presents mild intestinal metaplasia. E PET/CT showed gastric cancer with multiple lymph node metastases in the left supraclavicular fossa, lesser omentum sac, retroperitoneal, mesenteric root, and left iliac artery