I have two dogs. One is almost 8 and has no lumps. The other is a rescue- we don't know his true age. The vet says 4… I say 9. I think he's older than Lexi. He is COVERED in lumps. I swear I find a new one every day. Makes me really sad. When we took him into the vet for the inspection the option we were given was to have them each biopsied. Each spot cost $150. So we only had the biggest one done. It came back as just a fatty cyst. Our vet said there'd be no way to tell if it was cancerous unless we did each one... but he said chances are they are all the same. Most of his lumps are squishy and roll around under the skin; however, he has a few- especially on his chest that are not as malleable. I think those are the ones you have to be concerned with... that and if any of them grow very quickly. Miles's lumps are rather stable in size, but he is literally covered with them. They are on his sides, under his arms, on his thighs, and down his belly. My concern is that if we see this many on the outside... how many are on the inside? And at some point (if they are on the inside), will they start to interupt his body's natural ability to function? I tear up just thinking about this.
Our vet (mind you, who thinks he's 4) said he would NOT do surgery unless the lump was causing trouble. If the one under his arm pit gets bigger and started to hinder his movement, we would consider having it removed.
The size range for his lumps, however, are much smaller than a melon. They are from the size of a pea to about the size of a kumkwat. Most of them are about the size of a marble.
How long has your dog had the lump? Is it just one or are there more? Does it bother her? Does she try to scratch or bite it? Does it hinder her movement? Do you have any pics to share? Is the lump hard or soft? I hope you can find some help for her. Poor thing. Hugs...