Have Cat Questions? Ask a Cat Vet Online.
Hello. Thanks for writing in. My name is***** and I would be happy to help you. I am not set up to do phone calls but would be happy to answer any questions you do have online. In order to give an informative and concise answer, it may take a few minutes before I respond back to you, so don't be alarmed if you don't hear back immediately if you have responded back to me within 10 minutes of my response. I do have a couple more questions, though, to see if I can better assess your situation.
Does he have diarrhea?
Did your vet run any other tests besides blood work and thyroid? X-rays? Ultrasound?
In what time frame did he lose this weight?
Thanks for the information. With that amount of weight loss and normal blood work, I would start looking for cancer. Sometimes you see changes on blood work. Sometimes you don't. An inflammatory bowel disease issue in the stomach is possible as well. I would highly recommend pursuing an abdominal ultrasound to evaluate the internal structure of all the organs and look for any masses. Sometimes and x-ray can help with that as well, but it is not as sensitive nor specific of a test as an ultrasound is for evaluating the abdomen. I would get an x-ray of the chest, though, because you can sometimes see masses forming there if there is cancer that has already spread. You cannot see the lungs well on an ultrasound. Please let me know if you have any other questions or concerns. Hope this helps.
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I would still be very concerned about gastrointestinal lymphoma or some other type of cancer and a potential inflammatory bowel disease. The x-rays and/or ultrasound of the abdomen would definitely be the recommended course of action at this point. Let me know if you have further concerns.