Acute cholecystitisCholecystitis - acute

Acute cholecystitis is a sudden inflammation of the gallbladder that causes severe abdominal pain.

See also: Chronic cholecystitis

Causes, incidence, and risk factors

In 90% of cases, acute cholecystitis is caused by gallstones in the gallbladder. Other causes include severe illness and (rarely) tumors of the gallbladder.

Acute cholecystitis occurs when bile becomes trapped in the gallbladder. The buildup of bile causes irritation and pressure in the gallbladder. This can lead to infection and a hole (perforation) in the organ.

Gallstones occur more often in women than men. Gallstones become more common with age in both sexes. Native Americans and Hispanics have a higher rate of gallstones than most other people.


The main symptom is pain in the upper right side or upper middle of the abdomen. The pain may:

Be sharp, cramping, or dull

Be steady

Spread to the back or below the right shoulder blade

Other symptoms that may occur include:

Clay-colored stools


Nausea and vomiting

Yellowing of skin and whites of the eyes (jaundice)

Signs and tests

A physical exam will show that your abdomen is tender to the touch.

Your doctor may order the following blood tests:

Amylase and lipase


Complete blood count (CBC) -- may show a higher-than-normal white blood cell count

Liver function tests

Imaging tests that can show gallstones or inflammation include:

Abdominal ultrasound

Abdominal CT scan

Abdominal x-ray

Oral cholecystogram

Gallbladder radionuclide scan


Seek immediate medical attention for severe abdominal pain.

In the emergency room, patients with acute cholecystitis are given fluids through a vein and antibiotics to fight infection.

Although cholecystitis may clear up on its own, surgery to remove the gallbladder (cholecystectomy) is usually needed when gallstones are present. Surgery may be done as soon as possible- however, some patients will not need surgery right away.

Nonsurgical treatment includes:

Antibiotics to fight infection

Low-fat diet (when food can be tolerated)

Pain medicines

You may need emergency surgery if you have gangrene (tissue death), perforation, pancreatitis, or inflammation of the common bile duct.

In very ill patients, a tube may be placed through the skin to drain the gallbladder until the patient gets better and can have surgery.

See also: Gallstones - discharge

Expectations (prognosis)

Patients who have surgery to remove the gallbladder usually do very well.


Empyema (pus in the gallbladder)

Gangrene (tissue death) of the gallbladder

Injury to the bile ducts draining the liver (an occasional complication of cholecystectomy)


Peritonitis (inflammation of the lining of the abdomen)

Calling your health care provider

Call your health care provider if:

Severe abdominal pain does not go away

Symptoms of cholecystitis return


Removing the gallbladder and gallstones will prevent further attacks.