Neuroradiology
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The radiological manifestations of 16 pituitary adenomas, six meningiomas and 14 craniopharyngiomas were reviewed. The differential diagnosis of these tumors is possible with a few exceptions when skull radiography, CT, angiography and metrizamide cisternography are carefully evaluated. Prolonged injection angiography (PIA) is particularly important for demonstrating the contours of pituitary adenomas and meningiomas. Metrizamide cisternography is indicated when the tumor contours are obscure using PIA, or when the differential diagnosis is uncertain.
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An aneurysm of the vein of Galen is a rare midline arteriovenous malformation. The clinical signs and the prognosis strictly depend on age of presentation and on the amount of blood shunted into the malformation. In the newborn, cardiac failure is the most common presenting sign. ⋯ Computed tomography also added useful information on associated hydrocephalus and ischemic brain damage. The dilated vein of Galen, straight sinus and torcular were clearly seen. Abnormal arterial vessels feeding the malformation were also recognized.
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Case Reports
Bilateral occlusion of the cervical internal carotid arteries: a case with an unusual co-lateral circulation.
The case of a man, aged 67,who had bilateral occlusion of the cervical internal carotid arteries with an unusual collateral circulation between the occipital artery and the anterior cerebral artery, is described.
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The contribution of plain X-rays to the management of 170 patients suspected or actually found to have posterior fossa disease has been retrospectively assessed. A useful contribution was made in 4%.