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my dog has 2 small lumps on his legsJA:...

Resolved • Response time 1 minute

2 Apr 2020

my dog has 2 small lumps on his legs
JA: I'll do all I can to help. Some lumps are serious and some aren't. Let's see what the Veterinarian has to say. What is your dog's name and age?
Customer: Schubert, age 1.5
JA: Is there anything else the Veterinarian should be aware of about Schubert?
Customer: he's a terrier and has been treated for giardia in the past
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2 Apr 2020

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Dog Veterinarian's response
2 Apr 2020
Dr. Leah Hill
Dr. Leah Hill
Veterinarian

Hi, this is Dr Hill. Could you attach a photo of what you are seeing, thanks

2 Apr 2020
Customer reply
2 Apr 2020
Customer attachment 4/2/2020 4:57:44 AM
[Attachment hidden]
2 Apr 2020
Customer reply
2 Apr 2020
There is another smaller one on the front leg
2 Apr 2020
Customer reply
2 Apr 2020
I put a bandage on and it left some residual blood and discharge
2 Apr 2020
Dog Veterinarian's response
2 Apr 2020
Dr. Leah Hill
Dr. Leah Hill
Veterinarian

and to confirm hes 1.5 years old? Is he trying to lick at them?

2 Apr 2020
Customer reply
2 Apr 2020
He is 1.5, and no he is not licking and doesn't appear bothered by them
2 Apr 2020
Dog Veterinarian's response
2 Apr 2020
Dr. Leah Hill
Dr. Leah Hill
Veterinarian

ok since hes young the most common possibilities are histiocytomas or cysts. I would apply neosporin to them twice a day if they are moist like that. If they get bigger in the next few weeks then definitely take him into to have a sample taken to make sure its benign. Its very uncommon to have a cancerous mass at that age but we wouldnt want to miss that.

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2 Apr 2020
Customer reply
2 Apr 2020
okay thank you. Why is it that he has 2 separate lumps showing up at the same time, and on different legs?
2 Apr 2020
Dog Veterinarian's response
2 Apr 2020
Dr. Leah Hill
Dr. Leah Hill
Veterinarian

Its more likely to be a histiocytoma and they occur like this commonly at the same time in different locations. It wouldnt surprise me if more popped up. They usually regress within 3 months if its that

2 Apr 2020
Dog Veterinarian's response
2 Apr 2020
Dr. Leah Hill
Dr. Leah Hill

Here is an article on them

Histiocytoma is a Benign Skin Growth in Dogs

Wendy Brooks, DVM, DABVP

Date Published: 05/23/2004
Date Reviewed/Revised: 06/08/2019

Histiocytoma

Photo courtesy of Dr. Carol Foil

A histiocytoma is a benign skin growth that usually goes away by itself if given enough time. The typical histiocytoma patient is a young adult dog, usually less than 2 years of age, with a round eroded growth somewhere on the front half of its body. Of course, not every patient seems to have read the text book. Such growths can be found on rear legs or in older patients as well. Because there are other growths that can look just like a histiocytoma, it is important to get the right diagnosis as the other conditions may not be as benign.

The histiocytoma is a tumor originating from what is called a Langerhans cell. This Langerhans cells live in the skin and serve as part of the immune system by processing incoming antigens and presenting them to other immunologic cells. It is especially common in Labrador retrievers, Staffordshire terriers, Boxers, and Dachshunds. It is not related to the malignant process called histiocytosis.

What Might a Growth with this Appearance Be?

There are several possibilities for this type of growth, often termed a button growth. The ringworm fungus, for example, can produce some raised round reactions called kerions that can look similar. The mast cell tumor, which is highly inflammatory, sometimes malignant, and must be excised widely so as to prevent recurrence, can have an identical appearance. The melanoma can also appear as a similar lesion. If the patient is young, the chances are good that a benign process is afoot but some testing will be needed to be sure.

Finding Out for Sure

Most of the time the tumor is small enough for easy removal and the diagnosis comes up on the biopsy report, confirming that the tumor is benign and will not grow back. If the tumor is in a location where removal is not easy (such as the middle of the ear flap or dangerously close to the eye) there are two other options: biopsy of a small piece of growth or cytology exam.

Biopsy may require sedation depending on the location of the growth. Sometimes a local anesthetic is enough. A small piece of tissue is snipped off (or the entire lesion can be removed if it is small enough) and sent to the lab for analysis. In a few days we will know for sure exactly what the growth is.

Less costly but also less accurately, cells can be withdrawn from the lesion by a needle or simply collected from the tumor surface by pressing a microscope slide to the tumor surface. This omits the ability to see the architecture of the tissue and just the cells are available for examination. This may be enough for the lab to confirm the identity of the growth in question.

What to do with a Histiocytoma

On the average, a histiocytoma undergoes regression by itself within three months. This process may be itchy or may lead to minor infection. Removal of the histiocytoma is the fastest route to resolution but, since they do go away on their own, leaving the growth alone is reasonable (as long as we know for sure it is a histiocytoma). Topical therapy with a product containing DMSO and a cortisone derivative is helpful in controlling symptoms of irritation. Any growth believed to be a histiocytoma that is still there after 3 months should be removed. Any histiocytoma that is eroded or seems uncomfortable should be removed rather than waiting through the regression process.

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Dr. Leah Hill
Dr. Leah Hill
Veterinarian
Avg. question only $19
Veterinarian with almost 20 years of experience with small animals, birds, reptiles and pocket pets. Previous owner of 24/7 emergency, 8 doctor practice
2 Apr 2020
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