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英文誌(2004-)

Journal of Medical Ultrasonics

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1994 - Vol.21

Vol.21 No.12

Case Report(症例報告)

(0871 - 0876)

筋肉内動静脈型血管腫の超音波像

Ultrasonoerraphy of Intramuscular Arteriovenous Hemangioma

水関 清1, 近藤 俊文2

Kiyoshi MIZUSEKI1, Toshifumi KONDO2

1広見町国民健康保険愛治診療所, 2市立宇和島病院内科

1Hiromi Municipal Aiji Medical Center, 2Uwajima Municipal Hospital

キーワード : Arteriovenous hemangioma, Arteriovenous malformation, Soft tissue tumor, Ultrasonic diagnosis

This rare case of arteriovenous hemangioma occurred in the right thigh of a 17-year-old Japanese female with leg pain induced by running. Ultrasonic examination showed a hyperechoic mass with a central hypoechoic area in the distal portion of the semimembranous muscle adjacent to the ipsilateral popliteal artery. CT and MRI depicted a heterogeneous mass in the same location. In gross terms, the mass consisted of nests of small vessels and fatty tissue within the muscular bundle. Histologic evidence of vessels mimicking veins adjacent to vessels resembling arteries lacking an intimal elastic fiber layer lead to a diagnosis of arteriovenous hemangioma. Correlation of ultrasonic and pathologic findings suggested that the central hypoechoic area represented hemangioma itself, while the surrounding hyperechoic lesion indicated fatty infiltration of the muscle.