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MRI and CT scans of subdural mass before craniotomy. (A) Cranial CT showing a mass lesion in the left temporal lobe with an edema lesion surrounded. (B) Axialand (C) coronal MRI showing a relatively homogeneous enhancing 18×43 mm-sized mass exhibiting dural tail sign under the left frontal parietal medial plate and thickening of the adjacent cranial plate.
