11 year old Doberman with a non-malignant tumor the size of a deck cards located under the abdominal skin just below rib cage and unattached. Skin is shiny, friable, with repeated superficial infections over tumor site. Risks given her age for surgery? How to best treat the overlying skin area to reduce chance of infections?. So far, some success using a stretchy anxiety coat which keeps area covered / tension over tumor tissue, and Silvadene cream - after 2 weeks of antibiotics. Vet says good cardio-pulmonary condition for a surgery.
Without seeing your dog I can’t advise you very well. I would suggest a cytology sample be collected from the mass to give your surgeon a preview of what must be removed. Some tumors can be removed with relatively narrow margins. Others must have very wide margins to be successful. An opinion from an oncologist may be helpful.