Iwamoto Y, Morimoto N, Chuman H, Shinohara N, Sugioka Y
Department of Orthopaedic Surgery, Faculty of Medicine, Kyushu University, Japan.
Skeletal Radiol. 1995 May;24(4):267-70. doi: 10.1007/BF00198412.
The objective of this study was to analyze the characteristics of alveolar soft part sarcoma using magnetic resonance imaging (MRI).
MRI studies of pathologically proven alveolar soft part sarcomas (ASPS) in ten patients were reviewed and compared with computed tomographic (CT) studies and angiograms.
Ten patients presented with a soft tissue mass of the extremities, neck, axilla, or buttocks. MR images were obtained in all patients prior to surgical intervention, chemotherapy, or irradiation.
Although most soft tissue sarcomas are isointense relative to muscle or MRI T1-weighted images (T1WI), nine of the ten alveolar ASPS in the present study demonstrated high signal intensity on both T2 and T1WI. Flow voids were observed both at the core and at the margins of the tumors studied. Recognition of these characteristic MRI findings may lead to the early diagnosis of ASPS, especially when the clinical presentation is that of a slow-growing soft tissue mass in a young adult patient.
本研究的目的是利用磁共振成像（MRI）分析肺泡软组织肉瘤的特征。
回顾了10例经病理证实的肺泡软组织肉瘤（ASPS）的MRI研究，并与计算机断层扫描（CT）研究和血管造影进行了比较。
10例患者表现为四肢、颈部、腋窝或臀部的软组织肿块。所有患者在手术干预、化疗或放疗前均获得了MR图像。
尽管大多数软组织肉瘤在MRI T1加权图像（T1WI）上相对于肌肉呈等信号，但本研究中10例肺泡ASPS中有9例在T2和T1WI上均表现为高信号强度。在所研究肿瘤的核心和边缘均观察到流空现象。认识到这些特征性的MRI表现可能有助于ASPS的早期诊断，尤其是当临床表现为年轻成年患者缓慢生长的软组织肿块时。
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