How likely that seroma, incapsulated, 4 months post surgery, will go away on its own?

Seromas do in fact occur after liposuction, particularly following some of the newer energy based devices. Seromas should be drained as soon as possible. I would recommend needle aspiration to begin with. Sometimes this may need to be performed on several visits. Even if a capsule has formed, which is possible, needle aspiration is effective. Should the seroma continue to recur despite multiple aspirations, then you should consider open capsulectomy.

Your results are why not many docs do laser liposuction anymore since seromas are just 1 of the many problems seen with them. The seroma at 4 months needs drainage and kenalog injections at the very least. Sincerely, David Hansen,MD

Seromas are most often seen when ultrasound or lasers are used as a component of liposuction. They should be drained periodically until accumulation of the fluid stops. A chronic seroma cavity can compromise the long-term results.

A seroma 4 months after liposuction is very rare, and it is also very rare for it to incapsulate. The seroma needs to be drained and if if the fluid collection continues to develop, the bursa sac may need to be removed.

If it has been 4 months and the swelling has not steadily improved, the seroma might remain persistent unless some intervention is taken. You could have your surgeon aspirate the seroma, could have a drain placed, and could consider sclerosing agent therapy. If these options don't work, then surgical excision of the seroma capsule might be required. 

It is unlikely that a seroma cavity that is present four months after surgery will resorb.  Sometimes if it is treated by an interventional radiologist with sclerosing agents it may scar down.  It may require surgical excision. Good luck.

There is a chance you can get rid of it with multiple twice weekly aspirations and a compression garment, but no guarantees.