CT Features

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      Together, hypertension, aneurysm, and vascular malformations account for 80% of intracerebral hemorrhages. All cerebral hematomas, whatever the cause, have a similar resolution pattern on CT. The rate of resolution depends on the size of the hematoma, usually within one to six weeks, and they resorb from the outside toward the center. Perihematoma low density appears in 24-48 hours. Rim enhancement appears in one week and persists for six weeks. The end result of a hematoma is decreased parenchymal density, focal atrophy and local ventricular dilatation. 

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