What Is Vasogenic Edema?

There's vasogenic edema and there's cytotoxic edema. The blood brain barrier is a layer of tightly bound into the allele cells that prevents stuff in the blood from accessing the brain. This breakdown was sort of intuitive to me, but I had never really heard it so well broken down until I started looking at this literature. And then now if we were to zoom ahead, dexamethasone is standard of care for cerebral edema related to malignancy in the brain. So let's dive into maybe why, if we know anything about why steroids might have anti edema effect in thebrain.