Abnormalities of the Small Intestine Detected by Capsule Endoscopy in Hemodialysis Patients
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概要
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Objective Many patients on hemodialysis for chronic renal failure suffer from progressive anemia. In hemodialysis patients with gastrointestinal bleeding, endoscopic examination often fails to identify hemorrhagic lesions. We surveyed hemodialysis patients with obscure gastrointestinal bleeding (OGIB) for the presence of intestinal lesions by capsule endoscopy (CE). Methods Among 90 patients who underwent CE, 13 had hemodialysis-related anemia (8 men and 5 women, age 66.5±7.9 years, Hb 8.8±1.9 g/dL, mean ± SD) and 77 had non-hemodialysis anemia (47 men and 30 women, age 55.7±19.9 years, Hb of 11.9±3.1 g/dL). The types and distribution of hemorrhagic lesions were investigated by CE. All patients had signs or symptoms of gastrointestinal bleeding but no active bleeding site was detected by endoscopy. The CE-observed lesions were classified into reddening, erosions/ulcers, vascular lesions, and tumors. The characteristic features of each lesion and patient demographic data were compared. Results Vascular lesions were significantly more frequent in the hemodialysis group than in the controls (p<0.001). Reddening was observed in all patients of the hemodialysis group and mainly found in the ileum. Erosions/ulcers were observed in 4 patients (30.7%) and were more frequent in the jejunum. Vascular lesions were observed in 8 patients (61.5%) and they were more frequent in the ileum. A submucosal tumor was seen in one patient. There were no significant differences in demographic factors between patients with erosions/ulcers and those with a vascular lesion. Conclusion Vascular lesions are common in anemic hemodialysis patients with OGIB and should be considered in the differential diagnosis of anemia in patients on hemodialysis with OGIB.
著者
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Shiratori Keiko
Institute Of Gastroenterology Department Of Medicine School Of Medicine Tokyo Women's Medical U
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Nakamura Shinichi
Institute Of Gastroenterology Tokyo Women's Medical University
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Konishi Hiroyuki
Institute Of Gastroenterology Tokyo Women's Medical University
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Shiratori Keiko
Institute of Gastroenterology, Tokyo Women's Medical University Hospital, Japan
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Ohmori Teppei
Institute of Gastroenterology, Tokyo Women's Medical University Hospital, Japan
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Ohmori Teppei
Institute of Gastroenterology, Tokyo Women's Medical University Hospital, Japan
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Ohmori Teppei
Institute of Gastroenterology, Tokyo Women's Medical University
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