KMID : 0880420130140050810
|
|
Korean Journal of Radiology 2013 Volume.14 No. 5 p.810 ~ p.817
|
|
MRI Features of Spinal Epidural Angiolipomas
|
|
Hu Su
Hu Chun-hong Hu Xiao-yun Wang Xi-ming Dei Hui Fang Xiang-ming Cui Lei
|
|
Abstract
|
|
|
Objective: To describe the MRI findings in ten patients of spinal epidural angiolipoma for differentiated diagnosis presurgery.
Materials and Methods: Ten surgically proved cases of spinal epidural angiolipomas were retrospectively reviewed, and the lesion was classified according to the MR findings.
Results: Ten tumors were located in the superior (n = 4), middle (n = 2), or inferior (n = 4) thoracic level. The mass, with the spindle shape, was located in the posterior epidural space and extended parallel to the long axis of the spine. All lesions contained a fat and vascular element. The vascular content, correlating with the presence of hypointense regions on T1-weighted imaging (T1WI) and hyperintense signals on T2-weighted imaging, had marked enhancement. However, there were no flow void signs on MR images. All tumors were divided into two types based on the MR features. In type 1 (n = 3), the mass was predominantly composed of lipomatous tissue (> 50%) and contained only a few small angiomatous regions, which had a trabeculated or mottled appear. In type 2 (n = 7), the mass, however, was predominantly composed of vascular components (> 50%), which presented as large foci in the center of the mass.
Conclusion: Most spinal epidural angiolipomas exhibit hyperintensity on T1WI while the hypointense region on the noncontrast T1WI indicates to be vascular, which manifests an obvious enhancement with gadolinium administration.
|
|
KEYWORD
|
|
Epidural neoplasms, Spinal canal, Blood vessels, Lipoma, Magnetic resonance imaging
|
|
FullTexts / Linksout information
|
|
|
|
Listed journal information
|
|
|
|