Fig. 2
From: Unplanned revision spinal surgery within a week: a retrospective analysis of surgical causes
Magnetic resonance images of epidural hematoma and cauda equina syndrome. This patient had progressive peri-anal numbness and left lower extremity weakness on postoperative day 1. a Postoperative sagittal magnetic resonance imaging revealed epidural hematoma extending from L4–5 to the L2 level (arrows). b Cross-sectional magnetic resonance imaging revealed epidural hematoma at L2–3 (arrow) with compression-induced cauda equina syndrome