She was neg for feline
leukemia, etc, and we left her to be spayed. However, when her presurgical blood work came in, her bilirubin and another item were "off the charts", we were told she likely had pancreatic or liver cancer. (although skeletally thin, she had a hard distended abdomen so we thought she was preggers.) They observed her all day, and stated that with her lab results, they expected her to be vomiting and have diarrhea and be completely listless.