![]() ![]() ![]() Signs of a lateral medullary syndrome (Wallenberg syndrome) may coexist in ~30%. Differentiating features specific to lateral medullary syndrome are loss of function of cranial nerves 9 and 10 (glossopharyngeal and vagus nerve, respectively). Lesion of lateral medulla PICA or vertebral Loss of pain and temperature on ipsilateral face and contralateral. Most common: Vertigo, nausea and truncal ataxia. Symptoms include difficulties with swallowing, hoarseness, dizziness, nausea and vomiting, rapid involuntary movements of the eyes (nystagmus), and problems with balance and gait coordination. Inferior cerebellar vermis Lateral medullaġ9 Epidemiology Typically considered the most common territory involved in cerebellar infarction Definition Wallenberg’s syndrome is a neurological condition caused by a stroke in the vertebral or posterior inferior cerebellar artery of the brain stem. Posterior inferior cerebellar artery (PICA) Territory acute ischemic infarct Hidayatullah Hamidi, Radiology department, FMIC ĥ6 years old female presented with vertigo, nausea, vomiting and headache for last 3 days.ģ TECHNIQUE Brain MRI before and after IV administration of gadolinium.ĩ FINDINGS: Abnormal T2WI and FLAIR hyper intense and T1WI hypointenses focal areas involving left PICA territory (postero inferior aspect of left cerrebelar hemisphere, left inferior cerebellar vermis and left side of medulla oblongata) Diffusion restriction: Increased signal in DWI and drop of signal in ADC map No post contrast enhancementġ5 Time of flight MRA Non visualization of left vertebral artery, left anterior spinal artery and left PICA representing complete obstruction/thrombosis.ġ6 CONCLUSION: Non visualization of left vertebral artery, left anterior spinal artery and left PICA representing complete thrombosis resulting in acute ischemic infarction at the left PICA territoryġ8 PICA occlusion May cause infarction of Posterior inferior cerebellum vertebral) will produce a lateral medullary syndrome or Wallenbergs. Presentation on theme: "Posterior inferior cerebellar artery (PICA)"- Presentation transcript: Posterior Inferior Cerebellar Artery (PICA), the largest branch of the vertebral. ![]()
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