artery

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Lateral medullary syndrome, also known as Wallenberg's syndrome, is an ischemic disease of the medulla which involves the territory of the posterior inferior cerebellar artery [1].
So, the BA as a continuation of the left OA [44], the OA as a branch of the PPIA [25], or the posterior inferior cerebellar artery (PICA) as BA branch [21, 25] or PPHA branch [33] was described.
The left vertebral angiography has shown left AICA hypoplasia and left posterior inferior cerebellar artery (PICA) aplasia.

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