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英文誌(2004-)

Journal of Medical Ultrasonics

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1991 - Vol.18

Vol.18 No.05

Case Report(症例報告)

(0479 - 0484)

腫瘍径10 mm以下の膵腫瘍性病変2症例の超音波内視鏡(EUS)像の検討

A Study of Two Small Pancreatic Tumors (less than 10 mm in diameter) by Endoscopic Ultrasonography

鈴井  紀子1, 中澤  三郎1, 山雄  健次1, 芳野  純治1, 乾  和郎1, 山近  仁1, 渡辺  健一1, 朝倉  直子1, 松本  純夫2, 水野  有朋2, 木本  英三3, 三竹  正弘4

Noriko SUZUI1, Saburo NAKAZAWA1, Kenji YAMAO1, Junji YOSINO1, Kazuo INUI1, Hitoshi YAMACHIKA1, Kenichi WATANABE1, Naoko ASAKURA1, Sumio MATUMOTO2, Yuuhou MIZUNO2, Eizou KIMOTO3, Masahiro MITAKE4

1藤田保健衛生大学第2病院内科, 2藤田保健衛生大学第2病院外科, 3名城病院内科, 4名古屋大学第2内科

1Department of Internal Medicine, Fujita Health University School of Medicine, 2Department of Surgery, Fujita Health University School of Medicine, 3Department of Internal Medicine, Meijyo Hospital, 42nd Department of Internal Medicine, Nagoya University

キーワード : Islet cell tumor, Small pancreatic cancer, Endoscopic ultrasonography

We examined two cases of a small pancreatic tumor. One was a nonfunctioning islet cell tumor (6 mm) at the body of the pancreas, and the other was a duct cell carcinoma (8 mm) at the body of the pancreas. The ultrasonographic features of the two cases were evaluated by endoscopic ultrasonography (EUS). In benign islet cell tumor, a margin was distinct with lateral shadow and posterior enhancement. The contour was smooth and the internal echo pattern was hypoechoic with a homogenous central echogenic portion. However, in small pancreatic ductal adenocarcinoma, the margin was indistinct, the contour was irregular, and the internal echo pattern was hypoechoic with an irregular, central echogenic portion. The results suggest the EUS is a useful modality for the differential diagnosis in small pancreatic mass lesions because EUS provides characteristic sonograms of the pancreatic tumors.