Abstract
A 50-year-old female complained of swelling and dysesthesia on the right side of her face. Neurological examination showed no deficits. An MRI showed a tumor located in the infratemporal fossa which had extended into the right middle cranial fossa and into the right temporal muscle, partially invading the cavernous sinus. A biopsy diagnosed the tumor as meningioma. After preoperative feeder embolization of the tumor, the tumor was removed. The space resulting from the tumor removal was reconstructed with an inferior lateral rectus abdominis musculocutaneous flap. After the operation, her consciousness gradually decreased. Diagnostic imagings revealed that the musculocutaneous flap was compressing the brain, and we thought that was the cause of her decrease in conscious level. Four days after the operation, we debrided a part of the flap, and then her conscious level improved. We report a rare case of a decrease in conscious level due to a swelling musculocutaneous flap that was compressing the brain, and consider the causes.