Called the vet for advice said & she's not sure what it is-could be a burst cyst, could be a malignancy. DH must have heard wrong. It has shrunk to about 1/2 the size it was, since he's on antibiotics. We're going in a 1/2 hr before the scheduled surgery to speak to the vet to see what/if they can work something out for us. The secretary advised us to apply for the Care Credit before we see if the vet will work something out for us....why would I want to apply for another card if we won't need it?
Did the vet do a fine needle aspiration of the mass? If not, please have this done before the surgery. This is when the vet withdraws cells from the area and examines them under a microscope. Sometimes this needs to be sent off to a lab. I had this done several times with dogs and for the in office examination/scope it was around $50. This isn't always conclusive, however.
If the place is malignant, you may get an idea of what type of cells it contains and if it is an invasive, rapidly growing cancer, or something that is slow-growing. If it is invasive, you may wish to consider a chest X-ray to see if the cancer has spread to the lungs/organs, before proceeding with surgery. If it has, you may wish to not do surgery, but treat for comfort measures.
Given your dog's age, he will need pre-surgical bloodwork to see if he is strong enough for the surgery. Anesthesia gets more risky as they age. Hopefully your vet is willing to work with you. Trust me when I say I really understand vet bills and how quickly they can add up. I wish you luck.
VLee, you asked about pet insurance. My research has shown that it is a good option for young animals who may be injured in an accident, but that is about all it is good for. Many have a reimbursement plan where you pay 100% up front to the vet, then file a claim. As the dog ages and gets to the point where real health issues arise, the premiums get astronomical. Also, certain conditions are excluded based on breed or pre-existing conditions. Many begin the premium increases around age 7. When my dog had an emergency spleen removal at age 10, I was told that insurance would probably have denied any coverage had we taken a policy and paid the very large premiums throughout her life. The best thing to do is have a designated savings plan with set monthly contributions for your pets.