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Kidney Inflammation Due to Fluid Accumulation in Cats

Perirenal Pseudocysts in Cats

 

A perirenal pseudocyst is a condition in which fluid accumulates in a capsule surrounding the kidney, causing the kidney to enlarge. However, it is not technically a cyst because it lacks a true membrane covering. Perirenal pseudocysts primarily affects mature male cats (more than 8 years); if found in young cats, it commonly affects only one kidney.

 

Symptoms and Types

 

Although most cats with a perirenal pseudocyst have a nonpainful, enlarged abdomen, some may not display any symptoms (asymptomatic). In severe cases, symptoms of renal failure may manifest.

 

Cause

 

Although the exact cause of a perirenal pseudocyst is not completely understood, kidney tumors, surgeries involving the kidney, and certain types of injuries are thought to be factors for developing the capsule.

 

Diagnosis

 

You will need to give a thorough history of your cat’s health, including the onset and nature of the symptoms, to your veterinarian. He or she will then perform a complete physical examination, as well a biochemistry profile, urinalysis, and complete blood count (CBC) -- the results of which are normal unless severe renal insufficiency is present.

 

Imaging studies, including X-rays and ultrasounds, may identify which kidney is affected. Additionally, a fluid sample from around the affected kidney may be taken for further evaluation.

 

 

 

 

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