Treatment for internal fat necrosis after breast reduction

[rose58]

I had my breast reduction 5 weeks ago (600 gram removed from each breast) and apart from wound breakdowns under both breasts, which are being treated with debridement and wet to dry wound packing 3 times per week by the nurse at PS surgery.  I thought I was doing O.K. until the PS told me last week that I have fat necrosis in both breasts, the right having a larger hard area just above the nipple, the left breast only has a small area above the nipple. PS says that nothing needs to be done and that the necrosis will first harden and then soften and be re-absorbed into the breast, this process will probably take 12 months or more.
Is this the correct advice, or should I be getting a second opinion? Will the necrosis spread to 'live' tissue or even damage the areola/nipple complex? Also can the necrosis become gangrenous?
Very anxious and hoping for a quick reply.