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Note: This mnemonic card was created by a user, and it has not been vetted by the Knowmedge team.

Ring-enhancing lesions etiologies: MAGIC DR

Microbiology/Neurology
Metastases;
Abscess, including pyogenic abscess and abscess caused by atypical organisms, such as bacterial pathogens (Mycobacteria, Nocardia, Actinomyces, Rhodococcus, and Listeria); fungal pathogens (zygomycosis, Histoplasma, Coccidioides, Aspergillus, and Cryptococcus); and parasitic pathogens (neurocystircercosis, Echinococcus, and Entamoeba);
Glioma and other primary CNS neoplasms (eg, lymphoma);
Infarction;
Contusion;
Demyelination (multiple sclerosis, acute disseminated encephalomyelitis);
Resolving hematoma/radionecrosis.
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