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英文誌(2004-)

Journal of Medical Ultrasonics

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1997 - Vol.24

Vol.24 No.11

Case Report(症例報告)

(1773 - 1778)

超音波検査にて特徴的な所見が得られた回腸平滑筋肉腫の1例

A Case of Leiomyosarcoma of the Small Intestine: Characteristic Ultrasound Findings

前川 陽子1, 豊川 晃弘1, 衣笠 達也1, 深野 茂1, 関本 健一1, 奥田 喜啓2

Yoko MAEKAWA1, Akihiro TOYOKAWA1, Tatsuya KINUGASA1, Shigeru FUKANO1, Kenichi SEKIMOTO1, Yoshihiro OKUDA2

1三菱神戸病院外科, 2三菱神戸病院泌尿器科

1Department of Surgery, Mitsubishi Kobe Hospital, 2Department of Urology, Mitsubishi Kobe Hospital

キーワード : Leiomyosarcoma, Small intestine , Ultrasonography

A leiomyosarcoma of the small intestine was discovered behind the urinary bladder on ultrasonographic (US) examination. The patient was 49-year-old man with dysuria. Routine laboratory studies indicated leukocytosis, but there were no other abnormal findings. A soft mass was palpable through the rectal wall by digital examination. US showed a well-circumscribed, round, cystic lesion that measured 8 X 7 cm. The lesion was predominantly hypoechoic. Dilatation of the small intestine on the side anterior to the lesion was also identified. The pelvic computed tomogram (CT) showed a marginally enhanced low-density mass that contained an air-density spot, and surgery was performed. The tumor, located between the urinary bladder and the rectum, was a cystic mass containing necrotic tissue, and it originated from the small intestine. Histologic examination identified it as a leiomyosarcoma of the small intestine, a rare disease. The nonspecificity of the symptoms and difficulty of preoperative examination complicate the diagnosis. This report suggests the potential value of US findings in cases of leiomyosarcoma of the small intestine.