I would start out with Velashape. It combines the mechanical benefits of endermologie with radio frequency and infrared and has been shown to be helpful in smoothing areas after liposuction as well as improving skin texture irregularities. It is non invasive, and is performed in 8 weekly sessions with maintenance thereafter. There are fewer risks than revision liposuction and does not prevent revision liposuction in the future.
If the area has truly calcified, you will probably need surgery to remove the calcified walls around the seroma. Most other treatments will probably not removed the calcification.
Post Liposuction Irregularities, Swelling -- Try Massage, Velashape or Venus Legacy, Vanquish
This likely needs a revision procedure at this time however, vanquish/cellutone, venus legacy, velashape, exilis, massage all may be helpful to try as non invasive options. Best, Dr. Emer.
Unfortunately, that can be difficult to regret rid of. Easiest is to try steroid (kenalog) injections with ultrasound massages- after a year is ok.
Next options include Vaser ultrasound liposuction may break through the scar tissue or surgical excision.
An exam and consultation with a/your plastic surgeon is recommended to discuss your options and expectations.