A case of calcified chronic subdural hematoma wherein MRI was useful for decision of the treatment strategy
2014
: Calcified chronic subdural hematoma is a rare condition, representing 0.4-2.6% of all chronic subdural hematomas. It is often difficult to remove the hematoma without damaging the brain, owing to the adhesion between hematoma capsule and brain. Therefore, surgical intervention in managing calcified chronic subdural hematoma cases is still considered controversial. We report a case of calcified chronic subdural hematoma, which was successfully performed under microscopic guidance. A 72-year-old man complained of progressive left hemiparesis of 6-month duration. A CT scan revealed a calcified chronic subdural hematoma, 10 cm long and 4.5 cm thick, in the right convexity. On MRI, T2-weighted images showed a thin layer of cerebrospinal fluid intensity between the hematoma capsule and brain. There was no brain edema adjacent to the chronic subdural hematoma. Based on these MRI observations, we believed that adhesion between the hematoma capsule and brain would be mild. We then planned and succeeded in total removal of the calcified chronic subdural hematoma mass under microscopic guidance. The left hemiparesis disappeared after surgery. The patient was discharged without any neurological deficit. While considering surgical management in calcified chronic subdural hematoma cases, it should be important to evaluate adhesion between the hematoma capsule and brain with MRI.
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