My cat was recently diagnosed with a cancerous abdominal tumor. Does anyone know about the progress of such a cancer? We did not find out any specifics about what type since that could not save him. He has mostly just been loosing a lot of weight but was eating still, was more withdrawn, and had sores on his feet. Last night he had really bad diarrhea and vomiting, which was a first. Is this something that is here to stay do to the cancer, or a really awful night that will get better? Thanks for any feedback.