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Brain herniation is a potentially deadly side effect of very high pressure within the skull that occurs when a part of the brain is squeezed across structures within the skull. The brain can shift across such structures as the falx cerebri, the tentorium cerebelli, and even through the foramen magnum (the hole in the base of the skull through ...
Axial CT scan showing hemorrhage in the posterior fossa [22] Intracerebral bleeds are the second most common cause of stroke , accounting for 10% of hospital admissions for stroke. [ 23 ] High blood pressure raises the risks of spontaneous intracerebral hemorrhage by two to six times. [ 22 ]
The Posterior cranial fossa is colored in blue, yellow, and red. The posterior cranial fossa is the part of the cranial cavity located between the foramen magnum, and tentorium cerebelli. It is formed by the sphenoid bones, temporal bones, and occipital bone. It lodges the cerebellum, and parts of the brainstem.
Medulloblastoma is the second-most frequent brain tumor in children after pilocytic astrocytoma [ 37 ] and the most common malignant brain tumor in children, comprising 14.5% of newly diagnosed brain tumors. [ 38 ] In adults, medulloblastoma is rare, comprising fewer than 2% of CNS malignancies. [ 39 ]
Intracranial hemorrhage [1] Posterior reversible encephalopathy syndrome (PRES), also known as reversible posterior leukoencephalopathy syndrome (RPLS), is a rare condition in which parts of the brain are affected by swelling, usually as a result of an underlying cause. Someone with PRES may experience headaches, changes in vision, and seizures ...
Posterior reversible encephalopathy syndrome (PRES) is a rare clinical disease characterized by cerebral edema. [12] The exact pathophysiology , or cause, of the syndrome is still debated but is hypothesized to be related to the disruption of the blood-brain barrier. [ 12 ]
1 in 100 (type I) [a] Named after. Hans Chiari. Julius Arnold. In neurology, the Chiari malformation (/ kiˈɑːri / kee-AR-ee; CM) is a structural defect in the cerebellum, characterized by a downward displacement of one or both cerebellar tonsils through the foramen magnum (the opening at the base of the skull).
Kernohan's notch. Kernohan's notch is a cerebral peduncle indentation associated with some forms of transtentorial herniation (uncal herniation). [1][2] It is a secondary condition caused by a primary injury on the opposite hemisphere of the brain. [3] Kernohan's notch is an ipsilateral condition, in that a left-sided primary lesion (in which ...