My dog has mammary lumps and a bladder stone. Should the stone be removed first?

Question

My dog has not been officially diagnosed yet with mammary cancer but her vet says from his experience it looks as if she has it. She has a hat black lump and two other lumps one in each side of that one that are not hard. She does her blood work on Wednesday. She has lost weight but still has a healthy appetite and is still very active.She also has Calcium stone in her bladder. The vet feels that she should have that removed before the tumors are address does this make sense? Pet's info: Dog | Mixed Breed Small (up to 22lb) | Female | spayed | 13 years and 11 months old | 7.3 lbs

Megan, DVM, CVA · Accepted Answer

Poor Zoe! Depending on the size of the stone and whether or not she is currently having problems with the stones (urinary tract infections, bloody urine, difficulty urinating, etc) is whether or not I would address the stones first. If so, then I would have the stone removed and possibly remove the tumor at the same time if possible. If it isn’t possible to remove it then maybe the vet will be able to just take a biopsy of it. I have seen some mammary tumors that look bad but when sent off to the lab, they shockingly come back as benign. Mammary tumors in dogs are 50% benign and 50% malignant so you need a biopsy or to send in the mass to say for sure. If she isn’t having trouble with the stone and it isn’t too large, then it may be wise to take a biopsy of the mass first. If it is malignant, you may decide to not do the bladder surgery at all and just keep her comfortable. Mammary cancer is usually quite aggressive and spreads rather quickly. I hope this helps to guide you in her treatment. If you have additional questions, feel free to set up a consult with me. I am more than happy to give you my opinion where I am able.

My dog has mammary lumps and a bladder stone. Should the stone be removed first?

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