Pica syndrome cerebellum trial#
Pica syndrome cerebellum license#

Infarction of the inferior cerebellum may be caused by occlusion of the posterior or anterior inferior cerebellar artery due to embolism or atherosclerotic stenosis. Their condition may be misdiagnosed as a peripheral vestibular lesion. 9,12,13 Most patients with an inferior cerebellar infarction, however, do not go on to have brain-stem compression but make an excellent recovery. It is important to recognize a stroke involving the inferior cerebellum, because it can produce cerebellar swelling that can lead to brain-stem compression and death unless there is neurosurgical intervention ( Figure 1). 9,10 As many as 25 percent of patients with risk factors for stroke who present to an emergency medical setting with isolated, severe vertigo, nystagmus, and postural instability have an infarction of the inferior cerebellum. 1-6 Infarction and hemorrhage of the inferior cerebellum, however, may simulate vestibular neuritis ( Figure 1). When this syndrome evolves over days in a healthy person, it is usually attributed to a viral vestibular neuritis, also called vestibular neuronitis or, when acute hearing loss occurs, neurolabyrinthitis. Rapid, unilateral injury to either peripheral or central vestibular structures produces the acute vestibular syndrome, which consists of severe vertigo, nausea and vomiting, spontaneous nystagmus, and postural instability. The inferior cerebellum is perfused by the medial and lateral branches of the posterior inferior cerebellar artery (PICA) and the anterior inferior cerebellar artery (AICA). The inset illustrates the vascular supply to the inferior cerebellum. Over the next week, his nystagmus resolved and he began walking. On the day after surgery, the patient's mental status rapidly improved. Neurosurgical intervention was required because of brain-stem compression with noncommunicating hydrocephalus and progressive deterioration in mental status. The axial T 2-weighted image shows a high-intensity signal (white) in the right inferior cerebellum, with displacement of the medulla. Magnetic Resonance Image of a Right Inferior Cerebellar Infarction in a Man with Acute Vertigo, Vomiting, Nystagmus Elicited by Right, Left, or Upward Gaze, and Severe Gait Instability. The most trusted, influential source of new medical knowledge and clinical best practices in the world.įigure 1.

Pica syndrome cerebellum license#

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Pica syndrome cerebellum trial#

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