Fig. 4. Photographs of the surgical specimen. (A, B) 1.5-cm × 1-cm-sized perforation lesion was observed with previously applied clips and detachable snares. (C, D) The serosal surfaces around the perforation lesion are grossly thickened with hardening change. Because of these inflammatory change, primary repair of perforation was not impossible, and segmental resection of sigmoid colon was performed.
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