Can I Sue a Doctor for Poor Quality Liposuction? Or What in General Can Be Done in This Situation? (photo)

I had my surgery on march 28th this year, it was laser liposuction of upper and lower abdomen, sides and my back. Now almost 6 months later i am the same size as i was plus have a hardening about 3 centimeters thick in my lower ab which is not going away.(i massaged it, did few ''reaction'' sessions and followed all recommendations) i need to know what could go wrong with it and what can be done? not only about the way it looks but about doctor who performed this procedure.

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