Cerebral coenurosis

Case illustration

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This 46-year-old woman who lived in a rural area presented with worsening left facial nerve palsy, left-sided paresthesia, and ataxia. Peripheral neutrophilia was also present. Magnetic resonance (MR) imaging revealed a multilocular cyst within the pons that was hypointense on T1-weighted images; the cyst demonstrated peripheral enhancement, central hyperintensity, and peripheral hypointensity on T2- and T2*-weighted sequences (Fig. 1A and B). Via a left retrosigmoidal approach, the lateral aspect of the pons was opened near the bulbopontine sulcus. The cyst found 0.5 cm beneath the pial surface was removed after evacuation of

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Address reprint requests to: Federico Roncaroli, M.D., University Department of Neuropathology, Division of Neuroscience and Psychological Medicine, Faculty of Medicine, Charing Cross Campus, Fulham Palace Road, London W6 8RF, United Kingdom. email: f.roncaroli@imperial.ac.uk.

© AANS, except where prohibited by US copyright law.

Figures

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    A: Axial T1-weighted MR image revealing the multilocular cyst within the pons with peripheral enhancement. B: Coronal T2*-weighted MR image demonstrating hyperintensity of the cyst contents and peripheral hypointensity. C: Photomicrograph showing one of the protoscolices. H & E, original magnification × 25. D: Axial T2-weighted MR image demonstrating no residual lesion.

References

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