I just got off the phone with the vet. I tried to write down everything she said. Mony's lump came back as a sarcoma tumor which is a malignant cancerous type growth. There was healthy tissue all around the edges of the growth, so she got good margins there, but there was still evidence of the sarcoma cells at the bottom of it. Dr. Erica said that she had gone down right to his muscle. She said that these types of tumors are likely to come back in the same general area and they have a very low risk of spreading. She hadn't gotten a chance to phone the oncologist yet and is hoping to do so tomorrow to discuss what our options are if it does come back.
So basically we wait and see if it comes back or not I guess. I'm off to google some things as I don't fully understand.