case_images: PMC10349567_01
case_images: Abdominal contrast-enhanced computed tomography showing thickening of the gastric body and antrum wall and exudation around the gastric antrum (Red arrow: lesion).
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case_images: Abdominal contrast-enhanced computed tomography showed thickening of the gastric body and antrum wall, exudation around the gastric antrum, and multiple lymphadenopathies in the abdominal cavity and retroperitoneum (Figure 1).
case_images: Gastroscopy showing multiple geographically irregular, partially fused ulcers extending from the gastric body to the pylorus. (A) Gastric angle (Red arrow: ulcers); (B) gastric antrum (Red arrow: ulcers).
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case_images: Gastroscopy revealed multiple geographically irregular, partially fused ulcers extending from the gastric body to the pylorus, and lymphoma could not be ruled out (Figure 2).  
case_images: HE staining showing a large number of plasma cells and a small amount of neutrophil infiltration in the intrinsic mucosa. (A) Low magnification (original magnification x100); (B) high magnification (original magnification x400) (Red arrows: plasma cells).
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case_images: As shown in Figure 3, neutrophils had infiltrated and destroyed the glands, resulting in cryptitis.
case_images: IHC analysis showing an abundance of syphilis spirochetes in the mucosal lamina propria and glands. (A) Low magnification (original magnification x100); (B) high magnification (original magnification x400) (Red arrows: syphilis spirochetes).
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case_images: However, T. pallidum immunohistochemistry (IHC) showed an abundance of syphilis spirochetes in the mucosal lamina propria and glands (Figure 4).  