My seroma kept doing its thing for 8 weeks with the resultant delay of all other treatments. I got to know the medical imaging people very well getting it drained every four or five days. Then it started to septate and then it stopped. Couldn't believe it was all over.
In the interim I tried massage cold packs compression...Nothing made any difference. I too asked about reinserting a drain but the risks of infection go up and , in the end, you body has to get over itself, deal with the insult of the original wound and heal. More surgery seems counterintuitive.