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英文誌(2004-)

Journal of Medical Ultrasonics

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2002 - Vol.29

Vol.29 No.02

Case Report(症例報告)

(J171 - J175)

超音波検査が術前診断に有用であった虫垂粘液嚢腫の1例

A Case of Appendiceal Mucocele Diagnosed Preoperatively by Ultrasonography

矢島 浩2, 蝨句悄 典宏1, 高橋 孝1, 太田 博俊1, 畦倉 薫1, 上野 雅資1, 柳澤 昭夫3, 高橋 周二4

Hiroshi YAJIMA2, Norihiro KOKUDO1, Takashi TAKAHASHI1, Hirotoshi OHTA1, Kaoru AZEKURA1, Masashi UENO1, Akio YANAGISAWA3, Syuji TAKAHASHI4

1癌研究会附属病院消化器外科, 2現 東京慈恵会医科大学外科, 3癌研究会研究所病理部, 4岡村病院

1Department of Digestive Surgery, Cancer Institute Hospital, 2Department of Surgery, Jikei University School of Medicine, 3Department of Pathology, Cancer Institute, 4Okamura Hospital

キーワード : appendiceal mucocele, appendiceal ultrasonography

Preoperative diagnosis of appendiceal mucocele is difficult. We report one case that was diagnosed before surgery. The patient was a 68-year-old man who complained of a mass in the right lower quadrant of the abdomen. Ultrasonography disclosed a hypoechoic bilobular cystic mass approximately 12 cm in diameter. Tha mass had a fine-grained echoic pattern and posterior echo enhancement in the ileocecal region. The lesion was seen to be connected to the appendix and was believed to be a cystic lesion with mucinous fluid. It was diagnosed as an appendiceal mucocele. Results of other examinations could not help establish the diagnosis. At laparotomy, a fist-sized tumor was found attached to the appendix, and ileocecal resection was performed. The tumor was pear-shaped and contained a jellylike substance. Histologically, this lesion was diagnosed as a mucinous cystadenocarcinoma. Abdominal ultrasonography was the most useful of the preoperative examinations carried out to diagnose this lesion. Appendiceal mucocele should be kept in mind when performing routine ultrasonographic abdominal examination.