Kidney Enlargement (Renomegaly) in Cats Understanding Renomegaly In Cats

Kidney Enlargement (Renomegaly) in Cats

Renomegaly, or kidney enlargement, is the condition where a cat's kidneys are larger than usual. In this article, we further discuss this condition.

Kidney enlargement, or renomegaly, is when a cat's kidneys are bigger than usual. This can happen for a number of underlying reasons, including infections, tumors, and other medical disorders. While renomegaly in and of itself may not be detrimental to a cat, it can be an indication of a more serious condition that needs immediate care.

In this article, we will look at the origins, symptoms, diagnosis, and treatment options for kidney enlargement in cats, to assist pet owners to understand the problem and how to keep their furry pets healthy.

Reasons for Enlarged Kidneys in Cats

Feline enlarged kidneys, or renomegaly, in cats, can have several underlying causes. It could be brought on by an infection, like bacterial or fungal pyelonephritis. Renomegaly in cats can also be brought on by tumors, abscesses, and renal cysts. Additionally, certain medical conditions such as polycystic kidney disease, renal lymphoma, and amyloidosis can also result in enlarged kidneys. Rarely, some drugs or poisons might cause renomegaly as well. To correctly diagnose and treat renomegaly and guarantee the best outcome for your feline buddy, it is critical to determine the underlying cause of the problem.


The symptoms of enlarged kidneys in cats can vary depending on the root cause and the extent of the condition. Some common signs to watch out for include:

  • bloated abdomen: Enlarged kidneys can cause the belly to seem bloated or distended.

  • Vomiting: Cats with renomegaly may vomit, which may be brought on by the underlying illness or discomfort from the enlarged kidneys.

  • Loss of appetite: Renomegaly can cause a cat to lose interest in eating, which can result in weight loss.

  • Increased thirst and urine may result from the cat's impaired capacity to adequately filter waste from the body caused by the enlarged kidneys.

  • Lethargy: Cats who have renomegaly may become drowsy, sleep more frequently, and exhibit less interest in playing or interacting with people.

  • Increased Urination: Renomegaly can put pressure on the cat's bladder, making it challenging for the cat to urinate.

Can Cats Live with One Kidney?

Yes, cats can survive on just one kidney. Even though cats are born with two kidneys, they can still operate normally. In fact, cats are known to have an amazing capacity for adaptation to changes in kidney function, and they frequently manage to retain normal renal function with only a little amount of healthy kidney tissue.


The diagnosis of kidney enlargement in cats most times is a combination of physical examination, medical history review, and diagnostic tests. Some common methods used to diagnose renomegaly include:

  • Blood testing: Blood tests can be used to assess kidney function and spot any imbalances or abnormalities that might be causing renomegaly.

  • Urine testing: Urine tests can be used to evaluate kidney function, spot infection symptoms, and look for proteins or other compounds that can point to kidney disease.

  • Imaging studies: Imaging tests like ultrasounds, X-rays, or CT scans can help view the kidneys' size and structure and spot any cysts, tumors, or structural abnormalities.

  • Biopsy: A kidney biopsy may be done to acquire a tissue sample for microscopic inspection. This can aid in determining the underlying reason for renomegaly and serve as a therapy plan.

  • Additional testing: Depending on the underlying condition that is thought to be causing the renomegaly, more tests may be performed, such as bacterial or fungal cultures.

Enlarged Kidney in Cats Treatment

The enlargement of the kidneys is treated and managed differently in cats depending on the underlying reason and the severity of the problem. Some possible treatments include:

  • Medications: Depending on the underlying cause of renomegaly, drugs like antibiotics, anti-inflammatory drugs, or immunosuppressive agents may be prescribed to manage the condition.

  • Surgery: If a tumor or other structural abnormalities are the cause of the renomegaly, surgery may be required to remove the afflicted kidney or to treat the underlying problem.

  • Fluid treatment: To promote kidney function and maintain hydration, cats with renomegaly may benefit from receiving fluid therapy.

  • Dietary changes: A special diet may be recommended to support kidney function and manage any underlying medical conditions that may be contributing to renomegaly.

  • Management of underlying medical conditions: If renomegaly is caused by an underlying medical condition, such as polycystic kidney disease or amyloidosis, treatment of the underlying condition may be required to assist control symptoms and avoid future kidney damage.

Preventive Tips for Renomegaly in Cats

While not all cases of kidney enlargement, or renomegaly, in cats can be avoided, there are actions pet owners may do to help lower the chance of acquiring this illness. Among such preventative advice are:

  • Routine veterinary check-ups: Regular veterinary checkups can aid in spotting any indications of renal disease or other medical issues that might exacerbate renomegaly. Early diagnosis and treatment can help stop further harm and enhance results.

  • Proper nutrition: Feeding your cat a wholesome, balanced diet can help support overall health and minimize the risk of developing medical conditions that may lead to renomegaly.

  • Hydration: Ensuring your cat has access to plenty of fresh, clean water can help maintain hydration and support kidney function.

  • Environmental enrichment: Providing your cat with plenty of opportunities for playing with toys, exercise, and mental stimulation can help reduce stress and promote overall health.

  • Avoiding toxins: Some drugs, plants, and common home chemicals can harm a cat's kidneys and make them poisonous. Be careful to protect your cat from accessing these items.

  • Monitoring urine production: Keeping an eye on your cat's urine production might help you spot any alterations or anomalies that can point to renal disease or other health problems.

Pet owners may assist to improve the general health and well-being of their feline pets and lower the likelihood that they will acquire kidney enlargement or other medical disorders by adhering to these preventive guidelines and working closely with a veterinarian.

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