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Lumbar spine reporting - Nomenclature Bulge (>25% disc circumference) - Symmetric (Circumferential) - Asymmetric (Not Circumferential) Herniation (<25% disc circumference) - Protrusion base > dome - Extrusion dome > base Based on https://doi.org/10.1016/j.spinee.20 Dr. Mark Mamlouk @ https://twitter.com/MarkMamloukMD #Lumbar #Spine #Reporting #Disc #Classification #Nomenclature #Bulge #Herniation #Protrusion #Radiology #Diagnosis #MSK