My 6 year old cat was diagnosed with a heart base tumor. Surgeon did a Ct scan and said could not remove. Have not spoken to surgeon since she did Ct scan and then biopsy which was sent out. No test result from biopsy back yet. The fine needle sample taken previously the result was not accurate. it just said more than likely tumor in the chest could be attached to lung or or heart and could be hot,one related. It was not on Ct attached to lung it was hear base. Not sure what all this means and why it could not be removed. My somewhat understanding it was to close to heart or attached and/or to large. I was told to do nothing at home just watch breathing. Not sure what I am exactly watching for or how long the cat may or may not have left. My cat has been in this present condition for 8 months and counting. He was to many vets, many tests until we finally got this far in the diagnosis. Could he have little time left or not? Could anything further even be done? How do we care for him going forward? His breathing is fine for the most part some rapid breathing at times. He is eating, drinking, using the litter box, walking fine, playing a little, jumping up and down from cat tree, being interactive with his brother. He has lost weight and looks thin in the rear area. Has coughing type issue occasionally but moves on when he does. Has not had any major breathing issue since July 27 and one previous February 23 both resolved on it own no intervention from vet but we did bring to see vet. Any advice would be helpful.