Focal FDG Uptake in the Cerebral Parenchyma Beneath the Subdural Hematoma

Changes in cerebral glucose metabolism after subdural hematoma have been rarely reported. We present a case with acute subdural hematoma detected unexpectedly on FDG PET/CT. Focal intense FDG uptake in the cerebral parenchyma beneath the subdural hematoma was seen on PET. The density of the cerebral parenchyma was normal on CT. The patient received conservative management. He recovered without any complication. This case indicates that familiarity with the changes in cerebral glucose metabolism on PET after subdural hematoma may be helpful for optimal patient care.