The inverted Mercedes-Benz sign refers to the shape taken on by a spinal subdural hematoma on axial imaging at the level of the denticulate ligaments, best visualized on MRI. A pair of denticulate ligaments and the dorsal septum constitute the three radiating spikes of the sign, while blood expands and fills the three loculations in-between.
Not to be confused with the Mercedes-Benz sign.
- 1. Kasliwal MK, Shannon LR, O'Toole JE, Byrne RW. Inverted Mercedes Benz sign in lumbar spinal subdural hematoma. (2014) The Journal of emergency medicine. 47 (6): 692-3. doi:10.1016/j.jemermed.2014.07.058 - Pubmed
- 2. Pierce JL, Donahue JH, Nacey NC, Quirk CR, Perry MT, Faulconer N, Falkowski GA, Maldonado MD, Shaeffer CA, Shen FH. Spinal Hematomas: What a Radiologist Needs to Know. (2018) Radiographics : a review publication of the Radiological Society of North America, Inc. 38 (5): 1516-1535. doi:10.1148/rg.2018180099 - Pubmed