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Possible recurrent hernia?
A single view of an ultrasound is not very helpful. Ultrasounds are dynamic so the entire video of what was performed is more informative.
That said, this ultrasound shows two layers of mesh in the plane of view. The mesh layers are both flat. There is no air bubble. The question is: what type of mesh was implanted? If a single mesh, then the mesh is folded, with hematoma in between. If it was a two layer mesh, such as the Prolene Hernia System, then this may be a normal image.