My dog has a swollen stomach, black stool, and high liver enzymes.

My first question is whether your veterinarian tapped the abdomen to get a sample of the fluid....if so... what was it. With sudden abdominal distension, low red blood cell count I would be most concerned about a bleeding tumor. The fact that liver enzymes were elevated days following a steroid injection is hard to evaluate because the steroid injection wound cause a spike in the liver values....so were they elevated to start with or only following steroid administration. The best thing to do here is have an abdominal ultrasound and collect fluid. If the fluid is blood...there is likely a bleeding tumor. If the fluid is not blood....she may have right sided heart disease (heart worms or other cause), some type of cancerous process somewhere or other chronic metabolic disease. If you are uncertain about your veterinarian, ask for a referral for an ultrasound or seek a second opinion. I hope you find some answers . Thank you for using Petco Pet Education Center, formerly Petcoach.