Multiple Medical Problems for Zoey

For anyone who may not know, we recently added an old, starving English bulldog to our family. (See the post entitled "Do you want a dog" for the details of how she came to live with us.) Knowing we would be going on a trip to California soon, we decided to let her gain some weight before addressing any of her medical issues. The plan was to board her at a colleague's practice and have her general health evaluated, as well as having her spayed and her teeth cleaned, giving her several days of hospitalization to recover before we got home. You've heard that saying about the best laid plans of mice and men, right?
Sometimes it is hard to shut the doctor in my head up. Zoey was incredibly skinny when she came to us, and although she has had free choice food every moment lately, she just hasn't gained as much weight as I thought she should have. She had one eye that looked horrible, which is why my husband started taking care of her at the shelter in the first place. I suspected that she might have kidney disease, which would explain why her breath is so exceptionally bad. But her teeth are rotten as well, so I told myself that the odor was coming from those nasty teeth. Her urine is very dilute, almost clear, and she vomits nearly every day. I thought at first she was guzzling water, and overfilling her stomach with water and air, which was causing her to regurgitate. Now I'm not so sure. We did have her glucose level checked, thinking that she might be diabetic, and it was normal, which made me start thinking about kidney disease again.
In addition to all that, she came into heat shortly after we got her, and has bled a lot longer than she should have. This caused me to wonder about an infection in her uterus called a pyometra. But she seemed to feel okay and was still eating and drinking, so I second guessed myself again.
This morning we found out that she does indeed have elevated kidney enzymes. Really elevated. Her BUN is over 100 and her creatinine is 3.4. (My veterinarian friends will know what those values mean. For those who may not know, they are indicators of serious kidney issues.) She is anemic, which means she has too few red blood cells and her white blood cell count is over 23,000, which is very high. She is also heartworm positive, which is disappointing but did not come as a shock. She has a mass in her abdomen, which is visible on an x-ray and painful when you press on it.
I am hoping that all these things together point to a pyometra, an infection in the uterus. This condition is treatable with surgery to remove the uterus. IF she survives the surgery and her kidney condition is manageable, then we will decide what, if anything, can be done about the heartworms. Treatment for heartworm disease is dangerous at best in a young healthy dog.
We are keeping in mind that it is also possible that when the doctor opens her abdomen, she will find that it is full of cancer. The mass on her x-ray may be her uterus, and it may not. We are keeping our fingers crossed that she gets a favorable diagnosis, and that's where we are right now.
Thank you to everyone who has expressed concern about her today. It is extremely hard to be objective about your own animals, which is why we are not treating her ourselves. If you can bring yourself to say a prayer for a dog, please say one for Zoey today. I sure do miss hearing her snore while I write.