Intracranial neurenteric cysts are uncommon and occur usually in the posterior fossa. We report one case of a neurenteric cyst that was situated in the 4th ventricle. Total surgical removal was performed. One hundred cases having been published in the English language literature. We report on the imaging features of the tumor on several modalities as well as its histopathology. We further review the literature regarding this rare benign tumor entity.
Minor neck movements are a known cause of vertebral artery dissection even without any evidence of trauma. However, there are limited reports of unilateral vertebral artery dissection in a trauma patient evolving to a fatal posterior fossa infarction within one day, in the absence of any neurological deficit or a focal lesion on brain CT. We report such a case and comment on the overall efficiency of diagnostic alternatives to classic angiography that can be used in the acute phase of unruptured vertebral artery dissection. We present a case of a healthy 55 year old trauma patient with initial good neurological presentation and normal non-infused brain CT who deteriorated 16 hours following injury and deceased the following day due to a massive posterior fossa infarction and extended cerebral edema caused by vertebral artery dissection. We conclude that any trauma patient with a persistent, even mild occipital headache or neck pain can be a candidate for vertebral artery dissection. Such pathology requires both a high index of suspicion and the proper imaging modality. Vertebral artery dissection can be efficiently visualized by multisection CT angiography which is fast, accurate and non-invasive. This modality can be an alternative to classic angiography especially in emergency settings where it may not be easily available.
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