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Dr. Gary
Dr. Gary, Dog Veterinarian
Category: Dog Veterinary
Satisfied Customers: 19691
Experience:  DVM, Emergency Veterinarian, BS (Physiology)
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I just noticed late last week that my dog has been walking

Customer Question

Hello- I just noticed late last week that my dog has been walking around with his tail between his legs. I did not think much about it until today when I noticed that his anus was angled to his left. When I pulled up his tail, the right side has a bulbous protrusion which is pushing his anus to the side. Any idea? I took some photos. Where do I upload them to you?
Submitted: 6 months ago.
Category: Dog Veterinary
Customer: replied 6 months ago.
Here are some pictures
Expert:  Dr. Gary replied 6 months ago.

Hello, I'm Dr Gary. I've been practicing veterinary medicine since 2007. I look forward to helping with your questions/ concerns.

Expert:  Dr. Gary replied 6 months ago.

I'm looking through the pictures and working on a response. It shouldn't take more than a few minutes.

Expert:  Dr. Gary replied 6 months ago.

This is one of two things- an anal gland abscess or an anal gland tumor (anal sac gland adenocarcinoma).

I would lean more toward an anal gland tumor. The reason is because of the size and location. An anal gland abscess will usually be smaller and eventually rupture through the skin. When they get this big without rupturing, I think of a tumor as the most likely cause.

The diagnosis is made on rectal exam. They have a firm feel when a tumor or a fluid feel when an abscess. The treatment is surgical removal of a tumor and biopsy. This will tell you if it's malignant or benign. It also tells you the biologic behavior and how aggressive it is. If it's an abscess, we surgically drain and flush it and that treatment is curative.

I would see your vet in the next 1-2 days to get this diagnosed and treated.

Here's a nice write up on these tumors in dogs:

http://www.acvs.org/small-animal/anal-sac-tumors

I hope this helps, let me know if you have any other questions.

Expert:  Dr. Gary replied 6 months ago.
Hi,

I'm just following up on our conversation about Riley. How is everything going?

Dr. Gary