, 13 years old, male, was diagnosed with lymphoma last week. Chemotherapy is proposed as a treatment. It is defined as a slow progressing, alimentary lymphoma. My cat is vomiting and has sometimes diarrhea, but otherwise has appetite and the fur coat is in a good condition. It has been like this more than a year. We feed him with boiled chicken and also add food supplements such as vitamins, probiotics, immune boosting tablets, omega-3 rich oil.