Posterior Inferior Cerebellar Artery (PICA)
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Strokes
- Anterior Cerebral Artery (ACA)
- Middle Cerebral Artery (MCA)
- Posterior Cerebral Artery (PCA)
- Lenticulostriate Artery
- Anterior Inferior Cerebellar Artery (AICA)
- Posterior Inferior Cerebellar Artery (PICA)
- Anterior Spinal Artery (ASA)
- Basilar Artery
Summary
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Key Points
- Posterior Inferior Cerebellar Artery (PICA)
- Also known as Lateral Medullary Syndrome or Wallenberg Syndrome
- Loss of blood supply to lateral medulla
- Area of lesion
- Nucleus ambiguus (CN IX, X, XI)
- Dysphagia, hoarseness, decreased gag reflex, hiccups
- Vestibular nuclei (CN VIII)
- Nausea/vomiting, vertigo, nystagmus
- Spinothalamic tract
- Decreased pain/temperature sensation from contralateral body
- Spinal trigeminal nucleus (CN V)
- Decreased sensation from ipsilateral face
- Sympathetic fibers
- Ipsilateral Horner syndrome
- Inferior cerebellar peduncle
- Cerebellar signs: Ipsilateral ataxia, dysmetria
- Nucleus ambiguus (CN IX, X, XI)
- Also known as Lateral Medullary Syndrome or Wallenberg Syndrome