Cutaneous Lymphoma in cat

[Softpaws]

I'm kind of desparate for advice... I have a great 18 year old cat named Bing Crosby (he used to croon when he was a kitten). He developed lumps on his body about 2 months ago. I cuddle with Bing everyday so I know these lumps developed quickly. I took him to the vet the next day and the vet did a fine needle aspirate on the lumps. The vet said that he couldn't tell me exactly what type of tumour they were but that they looked nasty and should be removed. The next day my vet removed the lumps (Bing was such a trooper) and sent them away for analysis. The report came back with a diagnosis of Cutaneous Lymphoma. My vet told me that there hasn't been too much success treating this kind of cancer in cats but there were some things to try if I wanted. He gave me a list of treatment protocols which ALL sound quite nasty for Bing. I have been monitoring Bing very closely and his attitude is terrific, he is eating well, and he is the same sweet old guy everyone loves. Tonight I found two more lumps... I don't have any experience with this condition. My dilemma -- Do I attempt to treat the condition if Bing's quality of life is going to be horrible during the chemotherapy? Does anyone have any experience with this condition? Are the side effects of the treatment as nasty as they sound? HELP!