Varies : multiple potential causes. It is an area just under 1 inch by 2 inches that is near one of the facet joints in the muscle at the L4-5 level. Enhancement means that when contrast is given, the contrast fills the area indicating a good blood supply, which would typically rule out things like an abscess or cyst; Could simply be scar tissue; I could tell more by seeing directly, discuss with your md
Answered 12/7/2018
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