Today's Daily Diff concerns
cerebral ring enhancing lesions. The differential for this finding is fairly broad, and can have a significant impact on patient management. Having a brain metastasis is quite different from a resolving hematoma, no? To keep the various entities in mind, think of the phrase
DR MAGIC. This is non-sensical, but if you see such a lesion, perhaps think of Magic Johnson having a Toxoplasma abscess, and um, he's a doctor now for some reason...
| Disease | Notes |
| D | Demyelinating disease |
|
| R | Radiation necrosis |
|
| M | Metastases | Thick, nodular wall |
| A | Abscess | Marked restriction on DWI; thin wall |
| G | Glioma | |
| I | Infarct |
|
| C | Contusion | Resolving |
Some people add L to the end of the mnemonic for
lymphoma as well. Another entity to keep in mind, especially in certain patient populations, is
neurocysticercosis, especially if there are other calcified lesions present.
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