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Acute Hydrocephalus in Nonaneurysmal Perimesencephalic Hemorrhagee:Evidence of CSF Block at the Tentorial Hiatus Neurol 42:1805-1807, Rinkel,G.J.E.,et al, 1992 See this aricle in Pubmed Article Abstract The acute hydrocephalus in patients with nonaneurysmal perimesencephalic hemorrhage suggests an extraventricular obstruction of CSF flow.We studied the occurrence of acute hydrocephalus and the site of cisternal blood in 40 consecutive patients with perimesencephalic hemorrhage.In all 11 patients with hydrocephalus,all perimesencephalic cisterns were filled with blood;this occurred in only five of the 29 patients(17%)without hydrocephalus(p<0.0001).We conclude that in the absence of intraventricular blood,filling of all perimesencephalic cisterns with blood is a necessary factor for the development of acute hydrocephalus.

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(click to filter results - removes previous filter) CAT scan CAT scan,abnormal hydrocephalus hydrocephalus,communicating subarachnoid hemorrhage subarachnoid hemorrhage,perimesencephalic

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