Non-contrast axial CT brain of a 31 years-old male with an epidural (extra-dural) hematoma (arrows) shows a bi-convex hyperdense area in the left frontal region. Typically, an epidural hematoma is lentiform (bi-convex, lens shaped, lemon shaped etc.) and does not cross the sutures. In comparison, a subdural hematoma is cresenteric (moon shaped, sickle shaped, banana shaped etc.) and can cross the suture or midline