Most cases with chronic subdural hematoma (CSDH) are treated by simple irrigation and drainage, then more than eighty percent of them result in good recovery. But we sometimes encounter intractable cases with hematoma re-collection, which is considered of repeated bleeding from macrocapillary in the hematoma capsule. Embolization of the middle meningeal artery (MMA) is considered to be useful to eliminate the blood supply to this structure. The authors experienced seven cases of intractable CSDH treated by MMA embolization and no recurrence took place in all cases for up to 15 months. Endovascular treatment may be a good alternative modality for recurrent CSDH.
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