PMC2633326_01
Plain radiography of lumbar area showing bony erosion and widening of the canal (scalloping) at the level of L3 vertebra (arrow).
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F1
On plain radiography, evidence of vertebral scalloping and widened foramen at the level of L3 was considered probable (Figure 1).
Sagital magnetic resonance images showing an intradural mass at the level of L3, isointense to spinal cord on T1-weighted (A) and iso-hyperintense on T2-weighted sequences (B). T1-weihted axial image demonstrating the intradural mass pushing the caudal roots to the side of the canal (C).
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F2
Magnetic resonance imaging (MRI) revealed an intradural, well circumscribed mass at the level of L3, isointense to spinal cord on T1-weighted and isointense to hyperintense on T2-weighted sequences (Figure 2).
Post-gadolinium enhancement revealed in sagital (A), coronal (B), and axial (C) magnetic resonance images of this lesion.
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F3
Post gadolinium injection images showed remarkable homogenous enhancement (Figure 3).
Photomicrograph of the lesion demonstrating a lobule composing of small capillary vessels lined by a layer of endothelial cells. The fibrous capsule (arrow), interlobular septa (right-pointing arrowhead), and a capillary lumen (left-pointing arrowhead) are disclosed in the picture. H & E, original magnification, x4 (A) and x40 (B).
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F4
Histopathological assessment revealed encapsulated mass with lobular components containing small size capillary vessels lined by a single layer of flattened endothelial cells (figure 4).
A large vessel with endothelialized wall in the middle of the specimen, probable to be the feeder vessel. H & E, original magnification, x20.
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F5
A large vessel with structured endothelial components was seen in the middle of the sample, most likely to be the feeder vessel (Figure 5).