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Urinary Tract Stones/Crystals Made Up Of Uric Acid in Cats

Urolithiasis/Urate Stones in Cats

Urolithiasis is a medical term referring to the presence of stones or crystals in a cat's urinary tract. When the stones are made up of uric acid, they are called urate stones. These stones can also be found in the kidneys and in the tubes connecting the kidneys to the bladder (ureters).

While these stones can affect any cat breed, the condition does tend to be more common in male animals than in females. It is typically noticed within the first three to four years of life.

It is highly likely the stones will recur after treatment, but the overall prognosis for a treated cat is positive.

Symptoms and Types

While many cats will not show any signs of the disease, the most common symptoms usually deal with urination issues. These can include abnormal urine streams, difficulty urinating (dysuria), blood in the urine (hematuria), cloudy urine, and eventually the complete inability to urinate (anuria).

Causes

Cats that have an abnormal connection of the main blood vessel in the liver, called a portosystemic shunt, have a higher incidence of developing these types of stones in the urinary tract. A diet consisting of high amounts of purine – found in beef, poultry and fish – can also cause this condition.

Diagnosis

Ultrasounds are often performed to determine the size, shape, and location of the stones. This information will help your veterinarian to determine an appropriate treatment regimen. Bloodwork will also be performed to determine if there are any underlying medical conditions causing the stones.

 
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