PMC10316134_01
Composite of computed tomography angiography and magnetic resonance imaging constructive interference in the steady state. The right posterior inferior cerebellar artery branch was in contact with the right glossopharyngeal and vagus nerves (arrow).
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F1
MRI revealed a looped branch of the right posterior inferior cerebellar artery (PICA) contacting the root exit zone (REZ) of the right glossopharyngeal and vagus nerves [Figure 1].
Intraoperative view and schema. (a and b) A branch of the right posterior inferior cerebellar artery (PICA) formed a loop, contacting anteriorly with the root exit zone of the glossopharyngeal (IX, arrow), vagus nerves (X, arrowhead). XI: accessory nerve. (c) The PICA was transposed with Teflon felts and fixed with fibrin glue. (d) Final view.
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F2
The looped branch of the PICA was confirmed as compressing the REZ of the glossopharyngeal and vagus nerves from the ventral side [Figure 2].