Stomach and Intestine(Tokyo) Volume 47, Issue 4 (April 2012)

A Case of Colonic Lesion Showing Unusual Morphological Change Resulted in Split Diagnoses under Conventional and Magnifying Endoscopy Hiroyuki Aihara 1 , Shoichi Saito 1 , Tomohiko Ohya 1 , Takeshi Suzuki 1 , Tomohiro Kato 1 , Hisao Tajiri 1,2 , Masahiro Ikegami 3 1Department of Endoscopy, The Jikei University School of Medecine, Tokyo 2Division of Gastroenterology and Hepatology, Department of Internal Medecine, The Jikei University School of Medecine, Tokyo 3Department of Pathology, The Jikei University School of Medecine, Tokyo Keyword: 画像強調観察 , 診断的内視鏡治療 , 早期大腸癌 , 有茎性病変 , pseudocarcinomatous invasion pp.579-585
Published Date 2012/4/25
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 A sixty-one-years old male was pointed out as having a pedunculated lesion at the sigmoid-descending colon junction. White light observation showed the pedunculated lesion in the sigmoid colon with reddish and congestive appearance on the surface. NBI(narrow band imaging) observation and magnifying endoscopy under crystal violet dying of the depressed area showed no findings suggesting submucosal invasion. Diagnostic polypectomy was performed and consequently the lesion was pathologically diagnosed as early colon cancer with vascular involvement and submucosal invasion of 3,300μm. This case suggests that endoscopic diagnosis should be performed based not only on image enhanced endoscopy findings but also on conventional endoscopy findings.

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47巻4号 (2012年4月)
電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院