Brain Scans: Lord of the Ring Enhancing Lesions 101

There are many causes of ring-enhancing lesions. Abscesses usually have smooth and thin rims, with restricted diffusion, and lots of surrounding vasogenic edema. Necrotic neoplasms (GBM, mets) often have thick and irregular rims with increased central diffusion - also with vasogenic edema. Fluid-secreting tumors, usually low-grade pilocytic astrocytoma or hemangioblastoma) have a nodule or only a partial rim of wall enhancement. Tumefactive demyelinating lesions (TDL) often have an incomplete rim usually without surrounding vasogenic edema.

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[@itz_sara1905]

Loved the lecture! Thanks so much for simplifying the concepts!

[@luckmaster87]

Thank you. Coming to watch you live in Boston later this month

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Great video!!! Keep it up!!! Thank You Magical Dr!!!

[@cetric26]

You are a wonderful teacher and a great help. Thank you for your time and effort.

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[@skibitom]

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Concise. Very much appreciated.

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👍