Fig. 2

STH occurred in a patient in DG. Because of the watertight suture of the dura, only 10 ml of liquid was drawn out on the 2st POD. So the ED was pulled out. Severe headache occurred from the 3rd day. CT showed swelling of the brain tissue and STH and the mannitol q6h 250 ml was still not efficacious. After 30 ml of liquid from the subdural cavity was extracted via a puncture with a long needle through the bone hole, the symptoms were relieved. Therefore, a subsequent operation did not need to be performed. A CT scans showed light swelling of brain tissue. B CT scans showed severe swelling of brain tissue and STH on the 3rd POD. C MRI showed the swelling of brain tissue was reduced on the 4th POD. D CT scans showed light swelling of brain tissue and no headache suffered on the 10th POD