782028.fig.004a
(a)
782028.fig.004b
(b)
Figure 4: Initial cranial CT without contrast (a) and CT 12 hours later (b). A primary left superior frontal hematoma (3.3 × 1.5 cm) with minimal subarachnoid hemorrhage (a); significant hematoma expansion (4 × 2.5 cm) is evident on the repeat CT (b).