I didn't know you were an oncologist, alisanne. Thank you so much for weighing in. The vet did diagnose her as having a metastatic cancer--it's a bladder tumor that (they believe) has caused nodules elsewhere. She was prescribed an anti-inflammatory to make peeing a little more comfortable. And she is, but the side effect is more blood in the urine--actually, more blood than urine, truth be told. We're giving her vitamins and chicken to keep up her strength.