PMC10063354_01
Endoscopic image of gastric ulcer in first case (a). Microscopic image H&E stained 400x of lymphoepithelial lesion with surrounding lymphocyte mucosal invasion (b).
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fig1
After resuscitation with intravenous (IV) fluids and IV pantoprazole, an esophagogastroduodenoscopy (EGD) was notable for several clean-based gastric body ulcers, the largest being 1.5 cm (Figure 1(a)). Gastric biopsies were consistent with atypical B-cell predominance in the lamina propria and muscularis mucosa (Figure 1(b)).
PMC10063354_02
Endoscopic image of polypoid lesion in second case (a). Microscopic image H&E stained 200x of diffuse lymphocyte invasion into the lamina propria and muscularis mucosa (b).
CRIGM2023-8244696.002.jpg
PMC10063354_02_CRIGM2023-8244696.002.jpg
fig2
This was notable for a subtle, polypoid lesion in the gastric body along with oozing and large amounts of blood clots (Figure 2(a)). Saline-assisted snare biopsy revealed infiltration with B-cell lymphocytes into the muscularis mucosa (Figure 2(b)).