My chihuahua's perianal tumor shrunk after neutering. Should I worry?

Question

A year ago my chihuahua had a perianal gland tumor. The vet recommended a biopsy first, then neutering. Biopsy proved no cancer and the neutering shrunk the tumor. It's a year later and he stills has a small bump where the tumor was, the tumor was never actually removed. Should I be concerned? Pet's info: Dog | Chihuahua | Male | neutered | 11 years and 6 months old | 9 lbs

Laura Johnson VMD · Accepted Answer

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! If the tumor shrunk significantly, hasn't grown and isn't impeding or doesn't have the potential to block his anus then I would just monitor it. Remember that masses are easier to remove when they are small. If the mass starts to grow or bleed (these tumors have this potential) then I would remove it right away before it gets too big. I wish you and Willie the best!

My chihuahua's perianal tumor shrunk after neutering. Should I worry?

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