Keywords
cerebellopontine angle - cavernous malformation - brainstem - pontomedullary junction - microsurgery - retrosigmoid approach
Fig. 1 The cavernous malformation is visualized at the surface of the pontomedullary junction with hemosiderin staining. Access to the lesion requires delicate exposure of the lower cranial nerves as detailed in this figure.
Fig. 2 The cavernous malformation is seen clearly at the pontomedullary junction on this coronal magnetic resonance imaging (MRI). Postoperative contrasted imaging shows gross total resection of the lesion.
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