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What does a new hard breast lump mean for my senior dog with kidney disease?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | unspayed | 13 years and 1 month old

My pet, Molly, female mix of labra and great dane of 14 years is having kidney disease due to some infection treatment. She isnt spayed n no babies n was hvg mammory tumor. Her latest blood report of last week Doctor has adviced now to let her stay for whateverdays wiyhout any treatment as her bodyis nit strong as per them. Pfa. Suddenly in last 2 days, one of her front mamory gland 2nd one from top has suddenly develop very hard lump witjin 2 days. Pfa. What is it?. Please sugggest.

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2 Answers

Most Helpful Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on May 24th, 2019

Hello. At Molly's great age, the presence of kidney failure & mammary tumors, I agree with your veterinarian that it is best to keep her as comfortable as possible from here on out. I do not think her kidney issues are from infection, although a urinalysis may be more helpful here. The high BUN & creatinine plus her anemia indicates end stage renal failure. The swelling of the mammary gland may just be edema associated with her kidney disease, or the spread of her mammary cancer. It is impossible to tell just from a picture. 14 years is a very long life for a large breed dog like Molly. You have obviously loved & cared for her all her life. Please stay in touch with your veterinarian & follow all recommendations about pain control, & keeping her comfortable. I hope for whatever time she has, it is quiet & comfortable for everyone. Thanks for using Petco Pet Education Center, formerly Petcoach.

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    Answered By Lindsey Edwards MVB, BSc, IVCA

    Veterinarian

    Published on

    Poor Ruby, she does indeed appear to be gravely ill. The large mammary swelling is likely due to inflammation and/or infection within the tumour spread and this is an exceedingly painful condition as the skin and tissue becomes taught and stretched due to the rapid growth (slow growing tumours cause skin to grow around them, rapidly growing masses create pressure and stretch of overlying skin and soft tissue). I would strongly consider euthanasia for Ruby as her blood report also indicates she would not be a good candidate for invasive surgical or medical treatment given her anaemia and poor kidney function.

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