Our Abby- who is our "not a basset" has lots of cysts with more popping up weekly. She is almost 10- We have only had one burst with lots of yellow pus... but they are numerous in her arm pit area and groin. She now has 2 in the neck region that worry me. We have been to the vet often- including this Monday and are currently just watching them. The vet did a quick aspirate of a couple of them to be sure they were not lymph nodes- and they were not... but said a full biopsy may be needed if they keep growing. Clavumox worked wonders on hers- It is a very scary feeling watching these things appear and knowing the discomfort. Abby is on Rimadyl for arthritis but I was only using once a day- We've gone to twice a day and sometimes she acts like she is still in pain. She moves from the couch to the chair to the floor. Like you we've have the "unthinkable" cross our minds- though for now we are going one day at a time. As long as she eats and cuddles her "babies" we will let things ride...