Brain edema definition

Corticosteroids are a mainstay in the management of brain I metastases. They reduce edema that typically surrounds sites of metastasis, thereby reducing ICP. A loading dose of dexam-ethasone 10 mg followed by 4 mg by mouth or intravenously every 6 hours typically is used. Symptom relief may occur shortly after the loading dose, although the maximum benefit may not be seen for several days (after definitive therapy). 

Edema/blisters Poor definition between brain segments... 

In the subacute phase of infarct (1 day to 2 weeks), the hiCTease in vasogenic edema results in increased T2- and FLAIR hyperintensity, increased T1-hypointensity, and better definition of the infarction and swelling (Fig. 6.4). The brain swelling is manifest as gyral thickening, effacement of sulci and cisterns, effacement of adjacent ventricles, midUne shift, and brain henfiation. The... 

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