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J Yeungnam Med Sci > Volume 24(2 Suppl); 2007 > Article
Yeungnam University Journal of Medicine 2007;24(2 Suppl):S623-626.
DOI:    Published online December 31, 2007.
Black Pigmentation of Terminal Ileum after Long Term Ingestion of Charcoal
Jun Young Lee1, Sung Bum Kim1, Sang Hoon Lee1, Hee Jung Moon1, Jae Won Choi1, Jong Ryul Eun1, Byung Ik Jang1, Tae Nyeun Kim1, Joon Hyuk Choi2
1Department of Internal Medicine, College of Medicine, Yeungnam University, Daegu, Korea
2Department of Pathology, College of Medicine, Yeungnam University, Daegu, Korea
Correspondence:  Byung Ik Jang, Tel: (053) 620-3831, Fax: (053) 654-8386, 
Isolated pigmentation of the terminal ileum is rare incidental finding when performing a colonoscopic examination. The common substances that cause gastrointestinal pigmentations are lipofuscin, iron sulphide(FeS), hemosiderin, and other exogenous materials such as silicates and titanium. In most cases, pigmentation of the terminal ileum has no subjective symptoms, so it is found in autopsy or incidental colonoscopic examination. The cause of pigmentation has not been clearly identified. We experienced a case of pigmentation of terminal ileum associated with long term charcoal ingestion. This finding supports that the source of ileal pigmentation is ingested material.
Key Words: Colonoscopy, Ileum, Pigmentation, Charcoal
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