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My dog's X-ray shows enlarged heart, no symptoms. What's next?

Updated On September 23rd, 2025

My dog had a chest X-ray. It showed a slightly enlarged heart. But she has no heart murmer lungs are clear. No coughing. What does this mean?

4 Answers

Most Helpful Answer

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Answered By Dr. Leigh, DVM

Veterinarian

Published on March 1st, 2017

An enlarged heart could mean that your dog is developing heart disease but it could also just be normal for your dog. Your vet could submit a blood test called a proBNP which helps detect heart disease. You could also have a cardiologist perform an ultrasound of her heart to evaluate the function of her hear and measure the size.

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    Answered By Dr. Heidi DVM, CVA, CCRT, CVTP, CVSMT, CVCH

    Veterinarian, Certified Veterinary Acupuncturist, Certified Canine Rehabilitation Practitioner

    Published on January 19th, 2018

    Don't worry yet. Hopefully there is nothing wrong with Maggie's heart. When we take an x-ray of the heart, it gives us a general idea of the size of the heart when compared to the rest of the chest. But this information is not very accurate, so if we are worried about it and a heart looks a little bigger than we expect, then we will refer you to a cardiologist which is exactly what your vet did. The cardiologist will be able to use an ultrasound to look at the heart in 3D (called an echocardiogram) to determine if there is an abnormalities in how large the heart is including each chamber of the heart as well as evaluating the valves and how well the heart is working. If they find any abnormalities they may recommend medication to slow the progression of any heart disease, but they may not find anything wrong at all. You will have to wait to see what the cardiologist finds. Even if they find some evidence of heart disease, many dogs live for years with well controlled heart disease if we find it early. Good luck! I hope that was helpful. Thanks for using Petco Pet Education Center, formerly Petcoach.

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    Answered By David Elbeze, DVM, MRCVS

    Veterinarian

    Published on February 7th, 2020

    It doesn't work like this i'm afraid, you need to provide medical history and symptoms in order for anyone to check and analyse the x-ray. what i can tell you is that there is an enlarged heart and a lot of air in the stomach.

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    Answered By Ricardo Fernandez, DVM

    Veterinarian, Veterinary Oncology Resident

    Published on July 25th, 2018

    Thanks for using Petco Pet Education Center, formerly Petcoach! This depends on what is causing the heart to be enlarged. There are many heart diseases like chronic degenerative valve disease that can be managed throughout their lifetime and dogs can live a long life versus something like dilated cardiomyopathy which has a poor longterm prognosis. I would recommend you discuss with your veterinarian what seems to be the specific issue. A referral to a veterinary cardiologist can always be considered to get more specific information about the diagnosis, treatment and prognosis. This usually takes performing an echocardiogram and an electrocardiogram. Good luck and have a great day!

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