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英文誌(2004-)

Journal of Medical Ultrasonics

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1985 - Vol.12

Vol.12 No.06

Original Article(原著)

(0486 - 0496)

前縦隔腫瘍の超音波像

Ultrasonographic Findings of Anterior Mediastinal Tumors

池添 潤平1, 栗山 啓子1, 審良 正則1, 森本 静夫1, 有沢 淳1, 東原 悳郎1, 3, 曽根 脩輔1, 4, 小塚 隆弘1, 大野 喜代志2, 中原 数也2

Junpei IKEZOKE1, Keiko KURIYAMA1, Masanori AKIRA1, Shizuo MORIMOTO1, Jun ARISAWA1, Tokuro HIGASHIHARA1, 3, Shusuke SONE1, 4, Takahiro KOZUKA1, Kiyoshi OHNO2, Kazuya NAKAHARA2

1大阪大学医学部放射線科, 2大阪大学医学部第一外科, 3現 関西労災病院放射線科, 4現 信州大学医学部放射線科

1Department of Radiology, Osaka University Medical School, 2First Surgical Department, Osaka University Medical School, 3Present Address: Department of Radiology, Kansai Rosai Hospital, 4Present Address: Department of Radiology, Shinshu University Medical School

キーワード : Ultrasonography, Mediastinal tumor, Thymoma, Teratoma, Malignant lymphoma

 In order to know the clinical usefullness and limitation of ultrasonography in making diagnosis of mediastinal tumors, ultrasonographic findings were studied in 31 patients with anterior mediastinal tumors (13 thymomas, 11 teratomas, and 7 malignant lymphomas).
 Nine of 13 thymomas were demonstrated as homogeneous, solid tumors and the other 4 thymomas were mixed pattern tumors. The mixed pattern thymomas were large thymomas more than 6 cm in diameter, and invasive.
 Teratomas were visualized as solid, cystic, or mixed pattern tumors. Eight cystic teratomas were sonographically visualized as various kinds of mass, 2 cystic, 2 solid and 4 mixed. Three solid teratomas with some small cysts were demonstrated as mixed tumors. These complexity of echo pattern was partially due to the pathological complexity of teratomas, and partially due to the fact that some cystic lesions were visualized as solid or mixed pattern lesions when the content of the cyst was non-serous fluid, sebum, or muddy material.
 Seven malignant lymphomas were visualized as solid or mixed pattern tumors, 2 homogeneous solid, 3 inhomogeneous solid, and 2 mixed. There was no relationship between echo pattern and histological types of malignant lymphoma. One case with tumor infiltration around the great vessels and another case with chest wall invasion were nicely demonstrated on ultrasonography.