CT scan of a patient with history of head injury shows a biconvex hyperdense lesion displacing the grey–white matter interface. The most likely diagnosis is: (A) Subdural hematoma, (B) Diffuse axonal injury, (C) Extradural hematoma, (D) Hemorrhagic contusion
Answer is C. Biconvex hyperdense lesion on CT after a head injury suggest the diagnosis of epidural (extradural) hematoma.