Fuzz and I are now in the 10th week since his amputation. He continues to do well (eats like a pig and gets around fine).  Since the mid point of his recovery he still has some occasional mood disturbance and seemingly acts cranky if anyone moves or comes near him (hissing and swatting and then running off).  We have maintained a low daily dose of gabapentin for past several weeks (3rd bottle since diagnosis) and I have been giving him around .5 ml per day.  I noticed this past weekend a couple what feel like fatty deposits under his skin near top of his midline where incision came together.  One is small and the other would be maybe size of quarter.. to me they feel like they in skin or fat and not attached to his muscle or bone.  Fuzz had osteosarcoma in his right scapula. I have a call in to the vet and we are scheduled to go for his 3 month follow up right before Christmas but I am just wondering if this could be scar tissue or some type of fatty redeposit.  Was definitely not there for first few weeks of recovery.  He still occasionally has the issue where he looks like he has to adjust or move the shoulder/leg that is missing so again I wonder if it is some type of swelling maybe in that area.  the inicision came up over that area to midlineand then wrapped down shoulder and under chest wall.  I tend to panic when I discover things that were not previously there.  I can also attest that he has not lost weight and most likely has put on weight because he eats several cans of moist food per day along with free feed dry food. Just wondering how concerned I should be.. my mind keeps saying its nothing because he had very atypical bone cancer that usually does not spread and again this feels like it is in fat/under skin area.  He does not like me squeezing and messing too much with it so that too is why I question if it could be some swelling/scar tissue area as it is in area that is right where his shoulder blades would have been aligned.  Thoughts?