Raoul ended up having two mass cell tumors removed. One on his front right leg and one on his rear right leg. We won't know if they are malignant until the tests come back in a couple of weeks. I hope to post pictures of him later today. He is not handling it so well and whimpered all night. The poor guy has to wear a cone around his head and that is making it harder for him to get comfortable. Fortunately, he's finally getting some sleep now.
Thanks for all your kind thoughts.