Fluid collection in lumbosacral region after trauma. There are partially-imaged fluid collections in the posterior lower back deep subcutaneous tissues that measure up to 9 mm in thickness at the level of L3 to L5 and 4 mm in thickness at the level of T12 to L1, where there are also several low signal partial septations. The vertebral column alignment is within normal limits. The vertebral body and disc space heights are preserved. The vertebral bone marrow signal is unremarkable. There is no significant spinal canal stenosis. The spinal cord displays normal signal and morphology. There is a partially imaged distended urinary bladder.
Partially imaged nonspecific fluid collections in the posterior lower back subcutaneous tissues that measure up to 9 mm in thickness at the level of L3 to L5 and 4 mm in thickness at the level of T12 to L1. Differential considerations include hematomas versus a closed degloving injury (Morel Lavallee lesion).