Hello, here are a few links for you to look at in regards XX XXXX cell tumors like the one you are referring to. If the tumor was not attached and enough of the skin surrounding the tumor was removed then there may be a good chance for it to be non reoccurring. If you need anything else be sure to let me know.
http://www.kateconnick.com/library/mastcelltumor.html
http://journals.cambridge.org/action/displayAbstract;jsessionid=94B9B3BDC1144C0B45AF95B1AA8344D3.tomcat1?fromPage=online&aid=403392
http://www.tierklinik-hofheim.de/downloads/download_16.pdf
http://ccr.cancer.gov/resources/cop/head_and_neck_cancer.asp
Veterinary Assistant
10 years breeding, 6 years in Veterinary medicine, Lifetime of Dog ownership