Mimzy had a fatty lump on his left flank just behind his "elbow" and I had it removed to be sure. It turned out to be a lipoma (benign) and the site took a really long time to heal. Whilst he had quite a lot of "flap skin" in that area, taking margins did cause him to lose some range of motion on that side. It made me regret the surgery to an extent but his vet and I did feel it was necessary since she was unable to properly biopsy it with an FNA.
I hope Maple's lump is nothing sinister. She's such a beautiful wee lass. xxxxx