Tumors Common in Young Dogs

An expert answers your healthcare questions.


Q. Please give me information on noncancerous tumors in puppies. My 10-month-old Miniature Schnauzer has one on the front of his leg. My veterinarian said it would take two to three months before it fully disappears. It is very small right now.

A. It appears your veterinarian has diagnosed a histiocytoma. These are benign tumors or proliferations of histiocytescells in the skin that aid immune recognition processes. Their abnormal and uncontrolled growth results in a lump in the skintumor. These are most commonly seen in young dogs, though they can occur at any age. They are usually solitary, though multiple tumors can be seen in some individuals. They may inflame or become scarred. No underlying causes have yet been identified.

Ideally, you should have the tumor surgically removed and examined by biopsy. This eliminates the tumor and allows definite identification. However, your veterinarian is correct; the growth will probably disappear in a few months.


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Luci A   Wolf Creek, Oregon

12/30/2012 5:55:06 AM

I just noticed a small bump growing out of the top of the eye socket on my less than a year Pug. Is this normal? I am pretty worried cause I just had one Pug put down for Mass Cell Tumors Cancer and this looks like a red bump growing. Any comments on this?

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Erin   St. Louis, MO

4/14/2010 7:28:43 AM

My puppy has one on her head. My vet also said it would go away on its own. He said if it doesn't go away in a month or so they'd remove it, but it's best to let it resolve on it's own because then the dog builds antibodies to it and they'll be immune to it from now on. If you surgically remove it, there's a chance they can reoccur.

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bertha   SAN DIEGO, CA

8/30/2008 7:45:39 AM

thank for the information...

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Deborah   Coventry, RI

8/1/2008 1:26:16 PM

My little Chloe Jean a 3 year old full
ShiTzu was just diagnosed today with a benign tumor. It was frightening news but this article and many others helped me understand and calm myself. Thank you, Rhode Island

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