Q. Ist tumor taken out October 16, 2015. New tumor grew practical[y over night. It is very large and fat under her stomach up to her private part.
DAVID ELBEZE, DVM, MRCVS
A. Did this new tumor grew up in the same area? was the tumor malignant or benign the first time? does it affect her in any way?
You should get it checked by your vet, make sure it is indeed a tumor and not a fatty lump before you consider surgery as fatty lumps don't usually need removal.
Overnight occurrence might be a clue that it's not a tumor, maybe an abscess or an hernia - both need to be checked and treated anyway so take her to the vet.