Seroma - 7 months & counting

I was in good health until 2007 when I had a lumpectomy and sentinal node removal (left side). The lumpectomy scar healed quickly with no complications; the sentinal node scar opened whenever I wore a bra, so eventually I stopped wearing one and taped the incision closed. It healed without infection. This surgery was followed by 26 radiation treatments and 5+yr of Arimidex.

In October 2015 (at 70 yr old) I had an excisional biopsy (turned out benign) which left a long scar/deep crevice replacing the previous lumpectomy scar. Six (6) weeks after surgery the incision started to leak a wheat-coloured fluid. It was almost 2 weeks before I could get back in to see the surgeon. For 2 days during that time, the volume of leakage filled 4 taped-on sanitary napkins in a 24hour period. The surgeon called it a "lymphedema" and drained it 3 times in his office and prescried 10days of Cephalexin. I was then referred to another surgeon, who called it "seroma".

4 months following surgery, the incision became extremely red, and continued leaking the wheat-coloured fluid, although the volume was greatly reduced. Since the leak began, I have taken 2 rounds of Cephalexin antibiotic with no change in colour of the incision. This was followed by 3 ultrasounds, and 4 aspiration drainages but nothing was ever sent to the lab to determine bacterial content. The breast became hard, hot, thankfully not painful; the incision was bright red and leaking. There has never been swelling in the arm. During the second round of antibiotics, a small fleshy very sensitive protrusion (proud-flesh??) began growing from the incision where the leak was most pronounced. At that point I was referred to surgeon #3.

Three weeks later, Surgeon #3 prescribed the antibiotic Amoxicillin + Clavulanic Acid for 10days. About day 7, I developed thrush. Two weeks later (Rx is finished, thrush is full-blown) the surgeon probed the open area of the wound, packed it with gauze, and ordered home-care to come and replace the packing.every 2 days, as the opening was only 1cm deep. The large bandage covering everything is stained deep yellow/orange when it is removed. The packing strip and the covering bandage remained deep orange in colour, with a lot of drainage. Packing continued for 2 months, with Iodosorb and Intrasite gel sometimes mixed together and sometimes layered.

After 7-1/2 months skin irritation from the bandages became severe. Blood tests reveal nothing unusual. A recent ultrasound revealed a pocket of seroma about 1" x 1.5"; no aspiration was performed. MRI a month after that ultrasound confirmed the size and location of the seroma.

This week the surgeon (#3) has proposed another surgery (Incision and Drainage) of the incision site to clean the wound thoroughly, pack it with resorbable material, and count on that clearing the incision site.

I am told the extent and duration of this seroma is extremely unusual.

My questions: Is there anything I can do to speed resorption of the seroma fluid [and therefore stop the leaking and enable healing? ] and does anyone have any thoughts on the proposed surgical cleanup?

I am at my wits end.