PMC4610067_01
Preoperative magnetic resonance imaging showing contrast (gadolinium) enhancing ring-like lesion in the brain stem (pons) in axial (a) and sagittal (b) orientation
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F1
The radiological diagnosis was an abscess [Figure 1].
Magnetic resonance imaging scan (gadolinium enhanced) performed 6 months after stereotactic aspiration and antibiotic treatment. A small residual enhancement is observed. Scans are in axial (a) and sagittal (b) orientation
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F2
MRI scan showed progressive shrinkage of the abscess [Figure 2]. Microbiological analysis of the purulent collection showed a