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Gallstones – Causes, Symptoms and Treatment

Gallstones are hardened deposits in the gallbladder that can cause severe pain and inflammation. Learn about causes, symptoms, diagnosis, and treatment options.

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Things worth knowing about "Gallstone"

Gallstones are hardened deposits in the gallbladder that can cause severe pain and inflammation. Learn about causes, symptoms, diagnosis, and treatment options.

What is a Gallstone?

A gallstone (medically known as cholelithiasis) is a solid, crystal-like deposit that forms inside the gallbladder or the bile ducts. Gallstones develop when certain components of bile – primarily cholesterol or bilirubin – become overly concentrated and harden into solid particles. They can range in size from a grain of sand to a golf ball. Gallstones are among the most common digestive conditions worldwide, affecting approximately 10–15% of adults in Western countries, with women being more frequently affected than men.

Causes and Risk Factors

Gallstones form due to an imbalance in the composition of bile. The most common causes and risk factors include:

Cholesterol stones: The most common type, forming when bile contains too much cholesterol that cannot be fully dissolved.
Pigment stones: These develop due to elevated bilirubin levels, often associated with blood disorders or liver disease.
Obesity and overweight: Excess body fat increases cholesterol levels in bile.
Rapid weight loss: Crash diets or bariatric surgery can promote gallstone formation.
Female sex and estrogens: Estrogens raise cholesterol levels in bile. Pregnancy and oral contraceptive use increase the risk.
Genetic predisposition: Gallstones tend to run in families.
Older age: The risk increases significantly after the age of 40.
Certain medications: For example, fibrate-type cholesterol-lowering drugs or estrogen-containing preparations.

Symptoms

Many gallstones cause no symptoms at all and are referred to as silent gallstones. When symptoms do occur, they may include:

Biliary colic: Sudden, severe, cramping pain in the upper right abdomen that may radiate to the back or right shoulder.
Nausea and vomiting
Bloating and a feeling of fullness after fatty meals
Fever and chills (in the case of gallbladder inflammation, known as cholecystitis)
Yellowing of the skin and eyes (jaundice), if a stone blocks the bile duct

Diagnosis

Gallstones are typically diagnosed using imaging techniques:

Ultrasound (sonography): This is the first-line diagnostic method and can reliably detect gallstones in most cases.
Blood tests: Elevated liver enzymes, inflammatory markers, and bilirubin levels can indicate complications.
CT scan or MRI: Used in unclear cases or when bile duct stones are suspected.
ERCP (Endoscopic Retrograde Cholangiopancreatography): An endoscopic procedure used to visualize and simultaneously treat bile duct stones.

Treatment

Treatment depends on the presence and severity of symptoms and any potential complications:

Watchful Waiting

Silent gallstones discovered incidentally and causing no symptoms generally do not require treatment. Regular follow-up examinations are recommended, however.

Medication

Ursodeoxycholic acid can dissolve small cholesterol stones. This approach is only suitable in specific cases and may take several months to years to be effective.

Surgical Treatment

Laparoscopic cholecystectomy (minimally invasive removal of the gallbladder through keyhole surgery) is the standard treatment for symptomatic gallstones. It is safe, highly effective, and allows for a quick recovery. After gallbladder removal, normal digestion continues as the liver takes over bile production.

ERCP and Stone Removal

Stones located in the bile duct can be removed endoscopically using ERCP, often avoiding the need for open surgery.

Complications

If left untreated, symptomatic gallstones can lead to serious complications, including:

Cholecystitis: Inflammation of the gallbladder
Choledocholithiasis: Bile duct obstruction caused by a migrated stone
Pancreatitis: Inflammation of the pancreas
Cholangitis: Infection and inflammation of the bile ducts

Prevention

A healthy lifestyle can help reduce the risk of gallstone formation:

Maintain a healthy body weight
Follow a balanced, high-fiber diet
Engage in regular physical activity
Lose weight gradually – avoid crash diets
Stay well hydrated

References

Lammert F, Gurusamy K, Ko CW et al. - Gallstones. Nature Reviews Disease Primers, 2016; 2: 16024. DOI: 10.1038/nrdp.2016.24
Stinton LM, Shaffer EA - Epidemiology of Gallbladder Disease: Cholelithiasis and Cancer. Gut and Liver, 2012; 6(2): 172-187.
Portincasa P, Moschetta A, Palasciano G - Cholesterol gallstone disease. The Lancet, 2006; 368(9531): 230-239. DOI: 10.1016/S0140-6736(06)69044-2

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