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Subdural hygromas require two conditions in order to occur. First, there must be a separation in the layers of the Meninges of the brain. Second, the resulting subdural space that occurs from the separation of layers must remain uncompressed in order for CSF to accumulate in the subdural space, resulting in the hygroma. [1]
[3] [2] They also occur in the posterior cranial fossa, and near the falx cerebri and tentorium cerebelli. [3] Unlike epidural hematomas, which cannot expand past the sutures of the skull , subdural hematomas can expand along the inside of the skull, creating a concave shape that follows the curve of the brain, stopping only at dural ...
SAH in CAA usually occurs in those who age more than 60 years, temporary motor and sensory deficits, and intracranial bleed in white matter adjacent to cerebral cortex. Basal ganglia, posterior fossa, and brainstem are spared. Boston criteria is used to determine the likelihood of a cerebral hemorrhage due to CAA.
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 .
The cisterna magna (posterior cerebellomedullary cistern, [1] or cerebellomedullary cistern [2] [3]) is the largest of the subarachnoid cisterns.It occupies the space created by the angle between the caudal/inferior surface of the cerebellum, and the dorsal/posterior surface of the medulla oblongata (it is created by the arachnoidea that bridges this angle [3]).
The name of the condition includes the word "posterior" because it predominantly, though not exclusively, affects the back of the brain (the parietal and occipital lobes). Common underlying causes are severely elevated blood pressure , kidney failure , severe infections , certain medications, some autoimmune diseases , and pre-eclampsia .
Hygroma may refer to: Cystic hygroma; Subdural hygroma; Hygroma (canine disease) – swelling on or near a dog's elbow This page was last edited on 20 ...
Posterior fossa may refer to: Posterior cranial fossa, an area of the head; PHACES Syndrome, a condition of the posterior cranial fossa;