Fig 1. A, Sagittal, noncontrast T1WI demonstrates an extensive SDH dorsal to the clivus (black arrows). Closer inspection reveals an inferiorly projecting flow void extending from the suprasellar region into the sella turcica (open arrow), which raises the possibility of an aneurysm of the AcomA. Increased signal intensity seen along the roof of the sella (white arrow) is consistent with hemorrhage dissecting along the diaphragma sella. B, Axial T2WI demonstrates a saccular outpouching (white arrow) consistent with an aneurysm arising from the AcomA.