PMC7787840_01
Atypical perianal lesion.
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A physical examination revealed an atypical perianal lesion with tenderness on palpation (Figure 1).
The perianal lesion was confirmed to extend into the anus.
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Under general anesthesia, the perianal lesion was confirmed to extend into the anus (Figure 2), inducing rectal ulcer with a diameter of about 1.5 cm.
PMC7787840_02
Colonoscopy showed rectal longitudinal ulcers.
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At 117 days old, colonoscopy showed two rectal longitudinal ulcers (Figure 3).
Histology showed no granulomas but patchy inflammation reaching the submucosal layer (10x magnification).
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fig4
Histology showed no granulomas but patchy inflammation reaching the submucosal layer (Figure 4).