Fig. 2From: An unusual complication of sacral nerve root injury following bone marrow harvesting: a case reportPelvic magnetic resonance image (MRI) revealed left S2 nerve root injury. Initial T1 weighted image (a) and T2 weighted image (b) show enhancement around the S2 neural foramen (arrow head) and patchy edematous change with enhancement in the sacrum, retrosacral muscles, and subcutaneous layer around trajectory of the needle (Arrows). T1 weighted image (c) and T2 weighted image (d) of the follow up pelvic magnetic resonance image (MRI) 3 months after the onset. Little residual enhancement was present around the left S2 nerve root. However, edematous change and enhancement of the muscle and subcutaneous layer were not observedBack to article page