My dog has a bleeding lump on his back. Is it serious and what to do?

Question

My dog has a lump on his lower back which is about 0.5cm wide. It has been there for 2 days now. It seems to have a centre of which it bleeds from and we have no clue as to what it is or the cause of it. Pet's info: Dog | Labrador Retriever | Male

Laura Johnson VMD · Accepted Answer

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Thanks for the pictures! Many skin masses can look the same. Red dermal masses, like this one, can be benign or malignant. Some possibilities are an inflamed sebaceous adenoma, hemangioma, histiocytoma or it could be a Mast Cell Tumor. Since it showed up quickly I would have Oscar seen by your Vet. They can decide if aspirating it (sticking it with a needle and sending the slides to the lab) or removing the mass and sending it for biopsy is best. I hope this helps and I wish you and Oscar the best!

My dog has a bleeding lump on his back. Is it serious and what to do?

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