Abdominal Distension Average Cost

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What is Abdominal Distension?

The organs themselves can swell, causing visual enlargement of the abdomen. Benign or malignant tumor growth on organs or glands can also lead to an expanded belly. Older cats or unwell cats can lose muscle mass which allows the abdomen to look enlarged. During pregnancy, a female cat’s uterus will expand rapidly. Determining the reason for abdominal distention is something that needs to be done by a veterinary professional, as certain issues can be life-threatening.

The abdominal cavity houses many of a cat’s vital internal organs. It is a large cavity that is lined with a special peritoneum membrane that keeps the environment sterilized. This cavity can become enlarged or swollen when various substances build up within it. This distention can be due to excess fluids such as blood, water, urine or pus that have leaked from organs in the body. The abdomen can also swell from air, gas, fat or an internal obstruction.

Symptoms of Abdominal Distension in Cats

While the most obvious sign for abdominal distension is a visibly swollen belly area, noting all other symptoms may help to diagnose the underlying cause of the enlargement. Symptoms that commonly occur with abdominal distension include:

  • Sudden or gradual visibly larger abdomen
  • Vomiting
  • Diarrhea
  • Flatulence
  • Change in frequency of urination
  • Weakness
  • Lethargy
  • Collapse
  • Loss of appetite
  • Loss of muscle mass
  • Hair loss
  • Foul vaginal discharge
  • Increased vocalization

Causes of Abdominal Distension in Cats

Because there are so many organs present within the abdominal cavity, many different conditions can cause an enlarged abdomen. The underlying cause can be narrowed down by the abnormal substance filling and expanding the abdomen. Probable causes include:

  • Viral infection (such as feline infectious peritonitis)
  • Bacterial infection
  • Parasitic infection (often worms)
  • Pyometra (uterine infection)
  • Pregnancy
  • Cancerous or benign tumors
  • Kidney or liver disease
  • Foreign body consumption (leading to tear or obstruction)
  • Traumatic injury (such as a car accident)
  • Failure to form blood clots
  • Heart failure
  • Congenital heart defect
  • Cushing's disease
  • Food intolerance
  • Obesity

Diagnosis of Abdominal Distension in Cats

Bring your cat’s full medical history to your veterinary appointment. The veterinarian will perform a complete physical examination to determine whether the abdomen is filled with fluids, air, or solids. You will be asked about the onset of symptoms along with your cat's diet and urination patterns. An X-ray may be needed to identify enlarged organs or tumorous growths within the abdomen. A chest X-ray can evaluate heart issues if they have been suspected as the cause of distension. If too much fluid is present for clear X-rays, an ultrasound may be performed instead.

Abdominocentesis is often performed to remove a sample of abdominal fluid or air for further microscopic testing. This can reveal what type of fluid exists and can identify any bacteria present. Full blood work will be obtained to run a biochemical analysis, including complete blood count, packed cell volume, and total protein test. The CBC can show anemia, infection or malignancy within the cat. Urinalysis may be performed to find abnormal substances in the urine. If a tumor has been found or enlarged organs are present, a tissue biopsy may be collected for histopathological examination. 

The function of internal abdominal organs should be tested. Urine may need to be collected over the course of 24 hours to measure protein leakage and determine if the kidneys are failing. An echocardiogram may be run to examine the function of heart valves. Fecal examination may be needed to identify parasites and worms inside the cat. Tests should be run to see if the cat is FIP, FIV or FeLV positive.

Treatment of Abdominal Distension in Cats

Appropriate treatment will vary depending on the individual diagnosis of the cat. If distension has been caused by bleeding, emergency care will be administered to stop the blood loss. 


As a treatment, abdominocentesis can be used to drain fluid or air causing breathing difficulties within the cat. This draining relieves pressure on the lungs and diaphragm.


Administering diuretic medication can help drain excess fluid by causing frequent urination. Surgical Repair 

If a rupture has been found in any of the organs, surgery may be needed to repair the organ to stop leakage of blood or urine into the abdominal cavity. General anesthesia is needed for this procedure.

Surgical Removal 

The surgical removal of tumorous growths, diseased adrenal glands or of the entire uterus in the case of pyometra may be necessary to restore function to the cat’s body. Success of this surgery depends on whether progressed cancer or infection is present. If cancer exists, radiation therapy or chemotherapy may also be needed.


If a bacterial infection has been identified, the corresponding antibiotic can be administered to rid the body of the harmful bacteria. Antibiotics are also prescribed after operations to prevent infection from developing. Prescriptions generally last from one to four weeks.

Deworming Medication If parasites have been discovered in the cat, deworming medicine will be prescribed to eliminate the infestation.

Recovery of Abdominal Distension in Cats

If your cat has undergone surgery, follow all at-home care instructions given by the veterinarian. Monitor the incision site daily to ensure it is clean and free of infection. Do not allow your cat to lick or bite at its stitches. Limit activity until the healing process is complete. If surgical repair or benign tumor removal is successful, a cat may make a full recovery if it survives the surgery and healing process.

Bacterial infections and parasite infestation often resolve completely with appropriate medication. Pregnancy will resolve on its own within 65 days when kittens are born. If your cat suffers from obesity or food intolerances, your vet may create a specialized diet to follow. This diet should contain no fillers or chemicals. Increase your cat's activity to promote weight loss. If your cat has been diagnosed with FIP or gastrointestinal cancer, prognosis is much more guarded.

Abdominal Distension Questions and Advice from Veterinary Professionals

3 years
Moderate condition
0 found helpful
Moderate condition

I have a cat that is 3 years old. He has always had digestive problems, had trouble gaining weight, bouts of diarrhea etc. So I started giving him different proteins, such as duck, rabbit, salmon, etc. trying to find one that he could tolerate and also like. He can tolerate beef, ham, and salmon and herring. So we went these foods, grain free, plus a grain free dry. I also started him on pantoprazole and vitamin b12. He appears sometimes to have pancreatitis...he used to go thru bouts of belly pain about every 4to 5 months, but the pantoprazole seems to have helped that. Recently though, his belly has been swelling slightly and he seems to have a lot of gas. I think he has had inflammatory bowel disease and maybe triaditis over all this time. I live in a very rural area and don't have a really good cat vet nearby, so the rural vet and I try to work together to figure this out...I am serious, they don't do biopsies, they can do very basic stuff etc. so I need some advice here. What should I be looking for and what do I need to do about the swelling and the gas?

Dr. Callum Turner, DVM
1675 Recommendations
These types of problems rarely have an easy solution even with all the modern practice technology, I would start looking at a restricted ingredient diet (forgot the grain free - it is mostly a fad apart from a few cases) and try supplementing Thumper’s diet with some digestive enzymes to see if they helps things along a little bit. Also, make sure that worming, flea & tick etc… is up to date and see how you go. It is really hard to do anything with limited diagnostics, sending off some blood tests for pancreatic function etc… may help. Regards Dr Callum Turner DVM

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1 Month
Serious condition
0 found helpful
Serious condition

My kitten is 1 month old. I just noticed swollen belly 3 4 hours ago. Then saw puss getting out of that. Now the kitten is making meow noises and there is some liquid getting out from his mouth

Dr. Callum Turner, DVM
1675 Recommendations
If you are seeing these symptoms you should visit your Veterinarian as this is something which you wouldn’t be able to treat at home; flushing and a course of antibiotics would be most likely required. Also given Scar’s young age, his immune system wont be so strong either. Regards Dr Callum Turner DVM

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