case_images: PMC11746095_01
case_images: (A), Endoscopy of the upper digestive tract revealed a submucosal tumor in the gastric antrum. (B), CT imaging identified a space-occupying lesion in the gastric antrum. (C), Endoscopic ultrasonography showed that the tumor originated from the muscular layer with minimal blood flow inside and detectable blood vessels behind it. Under the microscope, the tumor appeared to be composed of aggregated round and spindle-shaped cells surrounded by capillaries (D). Immunohistochemistry revealed positive expression of smooth muscle actin and vimentin (E, F); however, no expression of syn and C-kit (G, H). The patient was re-examined by gastroscopy 1 year after the operation, and the wound healed well (I).
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case_images: PMC11746095_01_fonc-14-1501442-g001.jpg
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case_images: A routine health checkup revealed a submucosal bulge in the gastric antrum during gastroscopy ( Figure 1A ). Further improvement of the CT scan indicated an occupied lesion in the gastric antrum, which was considered benign ( Figure 1B ). A small amount of blood flow was observed within the tumor, and blood vessels behind it were also visualized ( Figure 1C ). Microscopic examination revealed that it consisted of clusters of round and spindle-shaped cells surrounded by capillaries ( Figure 1D ). Immunohistochemistry revealed positive expression of smooth muscle actin and vimentin ( Figures 1E, F ) but negative expression of synaptophysin (Syn) and C-kit ( Figures 1G, H ). Gastroscopy was performed again, and the analysis revealed that the surgical wound was perfectly healed ( Figure 1I ).
case_images: PMC11746095_02
case_images: PMC11746095_03