Martín S, Hernández L, Romero J, Lafuente J, Poza A I, Ruiz P, Jimeno M
Servicio de Radiodiagnóstico, Hospital General Universitario Gregorio Marañón, Madrid, Spain.
Skeletal Radiol. 1998 Jun;27(6):325-9. doi: 10.1007/s002560050390.
The imaging characteristics of lipoma arborescens using plain radiographs, computed tomography (CT), and magnetic resonance imaging (MRI) are described.
Five patients with a diagnosis of lipoma arborescens are presented. Three had monoarticular involvement of the knee joint. In the remaining two patients both knees and both hips, respectively, were affected. All patients were examined using plain radiographs and MRI. CT was employed in two cases.
A conclusive diagnosis with exclusion of other synovial pathologies having similar clinical and radiological behavior can be achieved on the basis of the MRI characteristics of lipoma arborescens. The aetiology of lipoma arborescens remains unknown, but its association with previous pathology of the affected joints in all our patients supports the theory of a non-neoplastic reactive process involving the synovial membrane.
描述树枝状脂肪瘤在X线平片、计算机断层扫描（CT）及磁共振成像（MRI）上的影像学特征。
介绍了5例诊断为树枝状脂肪瘤的患者。3例为单关节膝关节受累。其余2例患者分别为双膝关节和双髋关节受累。所有患者均接受了X线平片和MRI检查。2例患者进行了CT检查。
根据树枝状脂肪瘤的MRI特征，在排除具有相似临床和放射学表现的其他滑膜病变后可做出明确诊断。树枝状脂肪瘤的病因尚不清楚，但在我们所有患者中其与受累关节既往病变相关，这支持了一种涉及滑膜的非肿瘤性反应过程的理论。
