Abstract
A 65 year old female was admitted to the hospital because of headache, nausea and vomiting after a head injury. She developed somnolence 9 days after the injury. Cranial computed tomograpy (CT scan) revealed right occipital hematoma and bilateral subdural effusion. The conservative treatment was done, then neurological signs and symptoms improved gradually. Abnormal behavior and right hemiparesis were seen after 80 days of the injury. The CT scan disclosed left subdural hematoma. Left parietal burr-hole craniotomy and evacuation and irrigation of the hematoma were performed with good recovery. CT scan taken after 102 days of her injury showed right subdural hematoma which disappeared without operation in one year.
Subdural hygroma resulting from a tear of traumatic arachnoid membrane may develop to chronic subdural hematoma. Therefore, careful observation should be required when CT scan shows posttraumatic subdural hygroma.
