PMC6044142_01
A venacavagram performed during IVC filter placement demonstrating filling defect near the confluence of the common iliac veins (a) with delayed reconstitution of contrast flow into the right, but not left, common iliac vein (b). Findings are consistent with an occlusive thrombus in the left common iliac vein with extension into the proximal IVC which is near-occlusive in nature
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F1
Also noted was acute venous thrombosis extending from the left popliteal vein to the IVC (e.g., at the confluence of left and right common iliac vein) [Figure 1].
(a) Sagittal T1-weighted MR sequence revealing a lesion in the L5-S1 anterior epidural space that is heterogeneously hypointense (arrow). (b) Sagittal T2-weighted MR sequence with anterior spinal epidural lesion that is mixed iso- and hyperintense centrally with a rim of hypointensity peripherally (arrows), most prominently seen at L4-S1 but also present at T12-L3 levels. There is evidence of mass effect with compression of the thecal sac
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F2
When the lumbar magnetic resonance imaging (MRI) with and without contrast revealed a mass in the L5-S1 anterior epidural space, emergent decompressive laminectomy was performed to rule out an abscess/phlegmon [Figures 2 and 3].
Sagittal (a) and axial (b) images of gadolinium-enhanced T1 MR sequence. Arrows depict heterogeneous contrast-enhancing lesions in the anterior epidural space that have serpiginous fill void centrally
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F3
When the lumbar magnetic resonance imaging (MRI) with and without contrast revealed a mass in the L5-S1 anterior epidural space, emergent decompressive laminectomy was performed to rule out an abscess/phlegmon [Figures 2 and 3].