<prompt> Shape of post traumatic Epidural hematoma isBiconvex hyperdenseBiconvex hypodenseBiconcave hyperdenseBiconcave hypodense  <response>: A Biconvex hyperdense Epidural hematoma. Head CT after traumatic brain injury reveales a classic biconvex hyperdensity diagnostic of an epidural hematoma arrow. There is mass effect and midline shift to the left. Epidural Hematoma: The CT classically will show a hyperdense lesion hematoma that is biconvex or lens-shaped secondary to its position between the dura and the skull. 