Clinical information: The patient was a 55-yo woman with a history of myasthenia gravis and was treated with steroids.  She recently had a skin biopsy which showed a granulomatous dermatitis with acid fast organisms, cultured out as M. kansasii.  She presented later with mild confusion and 2 separate enhancing cerebral masses.  MRI revealed multiple lesions in the brain. A left thalamic biopsy was performed to rule out infection.

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