PMC4410728_01
Magnetic resonant imaging, mass lesion along the T12-L1 vertebral levels, which was hypointense on T1-weighted images (A), with a slightly lower signal than CSF on T2-weighted images (B). Heterogeneous gadolinium-enhanced T1-weighted images (C)
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On the thoracic, lumbar, and cervical MRI performed for further investigation, a mass lesion along the T12-L1 vertebral levels, which was hypointense on T1-weighted images (Figure 1A) with a slightly lower signal than the cerebrospinal fluid (CSF) on T2-weighted images (Figure 1B) and heterogeneous gadolinium-enhanced T1-weighted images (Figure 1C), was observed.
0.5x1 cm extradural hemorrhagic reddish mass.
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A dark hemorrhagic encapsulated mass, approximately 1.5x2 cm in size, with soft consistency in the epidural space without invasion of the dura, was localized on the right, posterolaterally, and was completely excised microsurgically (Figure 2).
Postoperative MRI shows no mass in the operation area. The mass was completely removed.
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A histopathologically cavernous hemangioma composed of large, dilated, blood-filled vessels lined by a flattened endothelium, was observed (Figure 3).
Preoperative T1-weighted MRI sagittal image shows a homogenous contrasted epidural mass at the T12 and L1 levels (A), and the axial T1-weighted MRI shows a mass in the epidural space (B).
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There was no residue on the control MRI (Figure 4A, 4B).