High Incidence of Colonic Perforation During Colonoscopy in Hemodialysis Patients With End-Stage Renal Disease  Norihiro Imai, Kinichi Takeda, Teiji Kuzuya, Setsuo Utsunomiya, Hiroshi Takahashi, Hirotake Kasuga, Masami Asai, Michiko Yamada, Yutaka Tanikawa, Hidemi Goto  Clinical Gastroenterology and Hepatology  Volume 8, Issue 1, Pages 55-59 (January 2010) DOI: 10.1016/j.cgh.2009.09.029 Copyright © 2010 AGA Institute Terms and Conditions

Figure 1 Frequency of colonic perforation during colonoscopy in the hemodialysis and control groups. Clinical Gastroenterology and Hepatology 2010 8, 55-59DOI: (10.1016/j.cgh.2009.09.029) Copyright © 2010 AGA Institute Terms and Conditions

Figure 2 Photomicrographs of colon mucosa at the site of perforation in a hemodialysis patient. (A) H&E staining (magnification, 100×); (B) Congo red staining (100×); (C) immunostaining with anti–β2-microglobulin antibody (100×). (B) Arrows indicate the Congo red–positive deposits in the wall of submucosal vessels; (C) arrows indicate deposits of β2-microglobulin at submucosal vessels. Clinical Gastroenterology and Hepatology 2010 8, 55-59DOI: (10.1016/j.cgh.2009.09.029) Copyright © 2010 AGA Institute Terms and Conditions