2 months post op lipo, after 1 month developed a seroma that has been absorbed, but area has hardened. Is this fibrosis?

Im 2 months post op from liposuction and 1 month in I developed a seroma underneath my arm...spoke with my dr she said it was small and would be absorbed by the body use compression etc...it was absorbed a week later however now the same area has become hardened...if this is fibrosis after lipo how do i effectively remove it??