PMC9437949_01
DBE: (A) double-lumen like opening was seen in ileum about 100 cm away from the ileocecal valve; (B) ulcer (black arrow) was observed on the sidewall of the duplicated intestinal canal.
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F1
Hence, DBE examination was performed: The lens entered from the anus to the ileum, and a double-lumen opening was observed approximately 100 cm away from the ileum (Figure 1A), with the blind end visible 6 cm away from one of these openings. Upon slow removal of the lens, a 0.5 cm x 0.6 cm ulcer covered by white moss was observed on the lateral wall, with congested and edematous surrounding mucosa but no active bleeding was observed (Figure 1B).
Ileal duplication (blue line) with a length of about 6 cm was observed during the laparoscopy.
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F2
During the operation, a repeated ileum segment (about 6 cm) was found 100 cm away from the terminal ileum, with complete mesangium and the blood supply (Figure 2).
Pathological results. (A) The duplicated intestinal canal exhibited the intestinal wall structure of the normal ileum (H.E. x 100); (B) Inflammatory cell infiltration was observed at the edge of the ulcer of the duplication intestine, without the presence of heterotopic gastric mucosa (H.E. x 100).
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F3
The pathological report showed chronic inflammation accompanied with mild acute changes (Figure 3B). However, under the microscope, the duplication intestinal canal exhibited the intestinal wall structure of normal ileum, but no heterotopic gastric mucosa was found (Figure 3A).