Glad to hear all is well today. After reading your original surgery post, I realized that what Li'l Girl had sounds very similar to a lump my 11 y/o lab, Cassie, had.
Vet wasn't sure what it was, but biopsy came back benign (thank goodness). She was in really bad shape for a few days before surgery and the vet thought it was more than her lump, but after surgery, she bounced right back and now she is my normal, jealous, attention-wanting, food-stealing baby! Yay.