Hi my nearly 12 year old cocker spaniel girl went in for what we thought was removal of a polyp in her colon but it has turned out to be a very large tumour and the vet was unable to remove it all, the vet feels it is malignant although we are still waiting for the path results to come back, previous to this she had been treated for colitis for some time. We are devastated at this news, has anyone had this diagnosis for their dog and what further treatment did they have if any