Progress of Digestive Endoscopy
Online ISSN : 2187-4999
Print ISSN : 1348-9844
ISSN-L : 1348-9844
A Case of Malignant Melanoma, Strongly Suggested to Assume the Sigmoid Colon to be an Origin
Toshiyuki EnomotoYoshihisa SaidaKazuhiro TakabayashiAyako OtsujiYoichi NakamuraMiwa KatagiriSayaka NagaoRyohei WatanabeMasashi UramatsuToshiaki OharasekiKei TakahashiKoji AsaiManabu WatanabeShinya KusachiJiro Nagao
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2010 Volume 77 Issue 2 Pages 138-139

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Abstract
We experienced a case of malignant melanoma occurred in the sigmoid colon. Malignant melanoma primarily occurred in the sigmoid colon has been rarely found and is difficult to be diagnosed.
A 78-year-old man was firstly diagnosed as sigmoid colon cancer and treated accordingly. During the follow-up, skin lesion was detected. So, we performed immunostaining, which identified malignant melanoma.
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© 2010 Japan Gastroenterological Endoscopy Society Kanto Chapter
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