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Endoscopic and Histopathological Diagnosis of the Lesions in the Esophageal Endscopic Submucosal Dissection Scar Akiko Takahashi 1 , Tsuneo Oyama 1 , Satoshi Shiozawa 2 , Tadakazu Shimoda 3 , Hiroyoshi Ota 4 , Aiko Arakawa 2 , Takahiro Yamada 1,5 , Satoko Kako 1 1Department of Endoscopy, Saku Central Hospital Advanced Care Center, Saku, Japan 2Department of Pathology, Saku Central Hospital Advanced Care Center, Saku, Japan 3Department of Pathology, Shizuoka Cancer Center, Shizuoka, Japan 4Department of Biomedical Laboratory Sciences, School of Health Sciences, Shinshu University School of Medicine, Matsumoto, Japan 5Department of Gastroenterology, Saku Central Hospital Advanced Care Center, Saku, Japan Keyword: 食道ESD瘢痕 , 異時多発癌 , NBI , ESD , ヨード染色 pp.286-299
Published Date 2023/3/25
DOI https://doi.org/10.11477/mf.1403203137
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 A reddish flat lesion that shows a BA(brownish area)by NBI(narrow band imaging)and an iodine-unstained area was found on the esophageal ESD(endoscopic submucosal dissection)scar.

 Eleven lesions in the scar after curative ESD from March 2010 to April 2020 were enrolled in this retrospective study. The endoscopic and histopathological features were examined. Six and five cases were diagnosed after non circumferential and whole circumferential ESD, respectively.

 In six cases that were diagnosed after noncircumferential ESD, five(83%)were SCC(squamous cell carcinoma)and one(17%)was a nonneoplastic lesion. All of 6 cases showed redness by WLI(white light image)and BA by NBI. One lesion which showed JES(Japan Esophageal Society)Type B1 was SCC, while JES Type A was present in five cases. SCC and nonneoplastic lesions were present in four and one cases, respectively.

 In five cases that were diagnosed following whole circumferential ESD, one(20%)was SCC and four(80%)were nonneoplastic lesions. Endoscopically, four of five cases were not identified via WLI or NBI but were diagnosed using iodine. The only SCC showed no findings by WLI and NBI, but iodine showed unstained lesion and diagnosed as SCC by biopsy.

 Based on our results, we suggest diagnosing the lesions in ESD scars as follows:when the lesion displayed JES Type B1 in noncircumferential ESD cases and direct ESD is acceptable, 80% of the lesions with JES Type A were SCC. As a result, if the endoscopic diagnosis is made with high confidence, direct ESD is acceptable ; however, if it is made with low confidence, taking a biopsy is recommended. After complete circumferential ESD, 80% of the lesions were nonneoplastic lesions. Follow-up is therefore permitted in situations when the iodine-unstained area is regular. An irregularly shaped, unstained region requires a biopsy diagnosis with p53 and Ki-67.


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