case_images: PMC10768022_01
case_images: (A) Gastroscopy before treatment. (B) Pathological findings of gastroscopic biopsy (HEx200) (suggesting moderately differentiated adenocarcinoma). (C, D) Abdominal CT before treatment. (E) Results of gastroscopy examination after 6 cycles of treatment (disappearance of lesions before treatment). (F) Pathological examination results after 6 cycles of treatment (HEx200). (G, H) Evaluation of Partial response (PR) after 6 cycles of trastuzumab combined with HAIC treatment.
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case_images: Gastroscopy revealed an ulcerating mass in lesser gastric curvature near the gastric antrum ( Figure 1A ). Gastroscopic biopsies showed moderately differentiated adenocarcinoma, as shown in  Figure 1B . Abdominal computed tomography (CT) revealed a lump in the gastric antrum, accompanied by enlarged lymph nodes in the hepatogastric space; Multiple enlarged nodules were observed in the liver, as shown in  Figures 1C, D . After receiving six cycles of treatment, the patient achieved maximum efficacy ( Figures 1G, H ). Gastroscopy showed no mass and ulcer ( Figure 1E ); Pathological biopsy showed no tumor cells ( Figure 1F ).
case_images: Hepatic arterial infusion chemotherapy (A, B).
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case_images: Oxaliplatin (80 mg/m2 for 2 hours) and fluorouracil (2,600 mg/m2 for 72 hours) were administered through the port catheter system ( Figure 2 ).
case_images: (A) Tumor markers returned to normal. (B, C) Follow-up CT in July 2023 assessed the stability.
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case_images: At present, the tumor markers of the patient are normal ( Figure 3A ), and the imaging assessment is stable ( Figures 3B, C ).