Petco Text Logo
Petco Pet Logo

My dog has a sudden lump. Could it be a histiocytoma? Should I wait?

Updated On September 23rd, 2025

Pet's info: Dog | Labrador Retriever | Male | unneutered | 1 year and 1 month old | 60 lbs

I have a 1 year old male black lab. I believe he has a histiocytoma. Should I see of it goes away or have it removed? It appeared rather suddenly.

This question includes photos that may contain sensitive content. Click to view.

View more to consider that the photos may include sensitive content.

1 Answer

Most Helpful Answer

Image profile

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on May 1st, 2017

I would have Milo seen by a vet to confirm that he does have a histiocytoma. If he does have one, then I would wait to see if it goes away. They typically spontaneous regress within three months. Should three months pass and it's still there, then I would discuss with your vet having it removed.

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored