For those looking for information about warts on Yorkies:
TREATMENT
In most cases, treatment is unnecessary; one simply allows the papillomas to go away on their own. Occasionally an unfortunate dog will have a huge number of tumors, so many that consuming food becomes a problem. Tumors can be surgically removed or frozen off cryogenically. Sometimes crushing several growths seems to stimulate the host’s immune system to assist in the tumor regression process. In humans, anti-viral doses of interferon have been used to treat severe cases of warts and this treatment is also available for severely infected dogs. Sometimes some of the warts can be removed and made into a “vaccine” which is felt to stimulate the immune system in removing the tumors, though such vaccines do not seem to be as effective as one might want. Obviously such treatments should be performed by a veterinarian; do not attempt freezing, cutting or crushing of growths on your own.
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http://www.marvistavet.com/html/body...apillomas.html