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英文誌(2004-)

Journal of Medical Ultrasonics

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1989 - Vol.16

Vol.16 No.05

Original Article(原著)

(0438 - 0447)

限局性牌病変の超音波診断

Echographic Study of Focal Lesions in the Spleen

谷口 信行1, 伊東 紘一1, 森 博昭1, 渡辺 光人1

Nobuyuki TANIGJCHI1, Kouichi ITOH1, Hiroaki MORI1, Mitsuhito WATANABE1

1自治医科大学 臨床病理学教室, 2同愛記念病院

1Department of Clinical Pathology, Jichi Medical School, 2Fraternity Memorial Hospital

キーワード : Spleen, Ultrasonic diagnosis, Cyst, Abscess, Metastatic tumor

We examined echograms of 44,634 spleens produced over a period of 10 years (1977-1987). The rate of appearance of focal lesion in the spleen was 0.13% (57/44,634). Twenty-two cysts, 8 abscesses, 16 metastatic tumors, 2 hematomas, and 2 infarctions in 57 cases were diagnosed by autopsy, operation, echography, angiography, X-CT and/or clinical examination. Seven other cases could not be definitively diagnosed.
Characteristic echo images of true cysts included thin wall and anechoic images, while false cysts produced thick capsule images and internal echoes. Abscesses usually formed in hematological disorders in immunocompromised hosts. We were generally able to diagnose abscesses without multiple small nodules. These are the metastases of malignant lymphomas and/or abscesses. Metastatic lesions from carcinomas of the stomach, rectum, and esophagus displayed characteristic patterns of high internal echo with a central anechoic area.
Ultrasonic examination was effective in diagnosing focal lesions in the spleen. In several cases, however, an accurate diagnosis would have to include other clinical findings.