Section 1 - Direct leukemic involvement of the Central Nervous System

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Nonmeningeal disease: Brain parenchyma

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Case 8 

This patient initially presented with fatigue, blurred vision and headache. BM aspiration revealed blast cells, and the dx of AML was made. MRI (8A:T2, 8B:T1 post) showed a large mass (white arrows), probably extraaxial, in the right occ. region which was isointense on T1 and T2, and enhanced brightly, mimicking a meningioma.

Note the dural sinus thrombosis.This lesion resolved completely with chemotherapy (8C:CECT), and was almost certainly a chloroma.

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