Dog has a red, growing lump on neck. Is it serious? When to see vet?

Question

My dog has a blister like growth on his lower neck I noticed it about a week ago and it has gotten a bit bigger and feels solid under it like there is liquid or something under it it is red and not much hair is growing on it. Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | unneutered | 30 lbs

Laura Johnson VMD · Accepted Answer

Hi, thanks for using Petcoach! How old is Max? If Max is young it is likely a benign histiocytoma, which are non-cancerous growths of young dogs. They tend to resolve in a few months and may ulcerate before they resolve. If Max is older I recommend having your Vet take a look to rule out cancerous causes, like a Mast Cell Tumor. The Vet can aspirate the lump and send it to the lab to have a pathologist will look at the cells. Histiocytomas can be diagnosed the same way. Then when the results are back you and your Vet can decide if it should be removed. I hope this helps and I wish you the best! https://vcahospitals.com/know-your-pet/skin-cutaneous-histiocytoma

Dog has a red, growing lump on neck. Is it serious? When to see vet?

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