case_images: PMC7417614_01
case_images: Fluoroscopy. (A,B) The upper gastrointestinal tract did not reveal any obvious abnormal findings, and the C-loop was also formed normally.
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case_images: F1
case_images: Fluoroscopy with amidotrizoate to confirm passage through the upper gastrointestinal tract did not reveal any obvious abnormal findings and revealed a C-loop after the descending pedicle of the duodenum (Figures 1A,B).
case_images: Total colonoscopy. (A) Total colonoscopy showed intussusception of the intestine with an ulcer at the top at the transverse colon. (B) The tip of the intussusception was red and had formed an ulcer.
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case_images: F2
case_images: However, TCS demonstrated intussuscepted intestine with an ulcer on top in the transverse colon (Figures 2A,B).
case_images: Total colonoscopy. (A,B) The intussusception was gradually reduced with endoscopic insufflation. (C) Ulcer formation was observed in the cecum, but no neoplastic lesion was observed. (D) Almost no abnormal findings were found between the ileocecum and the distal ileum.
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case_images: F3
case_images: We thus reduced the intussusception by endoscopic manipulation and insufflation (Figures 3A,B). After the reduction, the ulcer was observed in the cecum, but no neoplastic lesion that precipitated intussusception was noted (Figure 3C). Appendiceal orifice could not be clearly detected because of the cecal ulceration and reddish edematous mucosa; however, no other abnormal finding was observed from the distal ileum to the cecum (Figure 3D).
case_images: Abdominal contrast medium-enhanced computed tomography. (A,B) The images revealed an effect of enhancing the mucosal surface and the edematous wall thickening localized from the terminal ileum to the cecum. White arrows indicate the terminal ileum and cecum.
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case_images: F4
case_images: Contrast medium-enhanced abdominal computed tomography (CT) subsequently performed on the next day revealed enhanced mucosal surface and edematous wall thickening from the terminal ileum to the cecum (Figures 4A,B).