Warts

Todayโ€™s path rounds are on ๐œ๐š๐ง๐ข๐ง๐ž ๐ฐ๐š๐ซ๐ญ๐ฌ!

๐–๐ก๐š๐ญ ๐ข๐ฌ ๐ข๐ญ?
๐‚๐š๐ง๐ข๐ง๐ž ๐ฐ๐š๐ซ๐ญ๐ฌ are more scientifically known as ๐ฉ๐š๐ฉ๐ข๐ฅ๐ฅ๐จ๐ฆ๐š๐ฌ, and can be found all over the dog! We most commonly see them in the mouth, but they can even be found in places like the eye and skin.

๐–๐ก๐จ ๐ ๐ž๐ญ๐ฌ ๐ข๐ญ?
Typically we see these warts in young dogs.

๐–๐ก๐š๐ญ ๐œ๐š๐ฎ๐ฌ๐ž๐ฌ ๐ข๐ญ?
Papillomas are typically caused by ๐ฉ๐š๐ฉ๐ข๐ฅ๐ฅ๐จ๐ฆ๐š๐ฏ๐ข๐ซ๐ฎ๐ฌ๐ž๐ฌ, and when we are thinking about dogs, these warts are caused by ๐œ๐š๐ง๐ข๐ง๐ž ๐ฉ๐š๐ฉ๐ข๐ฅ๐ฅ๐จ๐ฆ๐š๐ฏ๐ข๐ซ๐ฎ๐ฌ-๐Ÿ. This virus is spread by close contact with other dogs with the virus, which allows the virus to enter into damaged oral tissue. From there, the virus infects the ๐ž๐ฉ๐ข๐ญ๐ก๐ž๐ฅ๐ข๐š๐ฅ ๐œ๐ž๐ฅ๐ฅ๐ฌ (cells lining the tissue) and causes them to proliferate. This proliferation produces cauliflower-like growths wherever the virus has set up shop. Some more ๐ฏ๐ข๐ซ๐ฎ๐ฅ๐ž๐ง๐ญ (aggressive) strains of papillomavirus are also able to make a home for themselves in the skin or other locations.

๐–๐ก๐ฒ ๐ข๐ฌ ๐ญ๐ก๐ข๐ฌ ๐š ๐ฉ๐ซ๐จ๐›๐ฅ๐ž๐ฆ?
Generally, young dogs will have only a few papillomas, which will ๐ฌ๐ฉ๐จ๐ง๐ญ๐š๐ง๐ž๐จ๐ฎ๐ฌ๐ฅ๐ฒ ๐ซ๐ž๐ ๐ซ๐ž๐ฌ๐ฌ (disappear) in 1-2 months after the immune system kicks in. However, in ๐ข๐ฆ๐ฆ๐ฎ๐ง๐จ๐ฌ๐ฎ๐ฉ๐ฉ๐ซ๐ž๐ฌ๐ฌ๐ž๐ animals, these papillomas can spread and produce tons and tons of warts! These animals may have difficulty chewing and swallowing due to the large amount of warts in their mouth. Additionally, these warts may progress to ๐ฌ๐ช๐ฎ๐š๐ฆ๐จ๐ฎ๐ฌ ๐œ๐ž๐ฅ๐ฅ ๐œ๐š๐ซ๐œ๐ข๐ง๐จ๐ฆ๐š, a malignant tumour, in some cases.

๐‡๐จ๐ฐ ๐ข๐ฌ ๐ข๐ญ ๐๐ข๐š๐ ๐ง๐จ๐ฌ๐ž๐?
These are pretty easy to diagnose, due to their characteristic cauliflower-like appearance. However, if the veterinarian wants to confirm the diagnosis, a biopsy or ๐š๐ฌ๐ฉ๐ข๐ซ๐š๐ญ๐ž (sample of cells) can be submitted to a pathologist.

๐‡๐จ๐ฐ ๐ข๐ฌ ๐ข๐ญ ๐ญ๐ซ๐ž๐š๐ญ๐ž๐?
Most warts are left alone, waiting for the immune system to kick in. If the warts are compromising the animalโ€™s quality of life, they can be surgically removed.

In some cases, the veterinarian may be able to make an ๐š๐ฎ๐ญ๐จ๐ ๐ž๐ง๐จ๐ฎ๐ฌ ๐ฏ๐š๐œ๐œ๐ข๐ง๐ž for that animal. In this process, a wart is removed from the animal, processed and turned into an injectable substance, and injected back into the animal. This stimulates the immune system to the injected material, which will result in it recognizing the other warts as well. Neat!

๐๐ก๐จ๐ญ๐จ๐ฌ
1-5) Examples of warts in the mouths of dogs!

๐’๐จ๐ฎ๐ซ๐œ๐ž๐ฌ
Maxie, G. Jubb, Kennedy and Palmerโ€™s Pathology of Domestic Animals, Volume 2. Sixth Edition.
Reiter AM. Papillomas in Dogs. Merck Veterinary Manual 2016.

Photos 1-5 ยฉ Noahโ€™s Arkive contributors Panciera, Grandi, Synder, Vtscharner licensed under CC BY-SA 4.0.

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