Overview

Bile duct stones, medically known as choledocholithiasis when they occur in the common bile duct, are hardened deposits that block or partially obstruct the tubes carrying bile from the liver and gallbladder to the small intestine. Most bile duct stones originate in the gallbladder and move into the common bile duct. Some may form within the bile ducts themselves.

Bile duct stones can interfere with bile flow and cause abdominal pain, jaundice and inflammation. If left untreated, a blockage can lead to serious complications, including cholangitis, an infection of the bile ducts, or pancreatitis. Bile duct stone treatment depends on the stone's size, number, location and the presence of complications.

Symptoms of Bile Duct Stones

• Pain may occur in the upper right or upper middle part of the abdomen and may spread towards the back.
• The skin and whites of the eyes may turn yellow when bile cannot drain properly.
• Excess bilirubin in the bloodstream can make urine darker than usual.
• Reduced bile reaching the intestine can make stools appear lighter.
• These symptoms may accompany abdominal pain or inflammation.
• These may indicate an infection in the bile ducts and require urgent medical assessment.
• Bile-related substances accumulating in the bloodstream may cause itching.

Causes of Bile Duct Stones

• Gallstones Moving into the Bile Duct
• Stone Formation Within the Bile Ducts
• Bile Duct Narrowing or Obstruction
• Changes in Bile Composition

Diagnosis of Bile Duct Stones

Bile duct stone diagnosis involves reviewing symptoms, examining the patient and assessing blood test and imaging results.

• Abdominal Ultrasound: An abdominal ultrasound is often used as an initial investigation. It can identify gallstones in the gallbladder and may show widening of the bile ducts.
• Magnetic Resonance Cholangiopancreatography (MRCP) : MRCP uses magnetic resonance imaging to produce detailed images of the bile and pancreatic ducts.
• Endoscopic Ultrasound (EUS) : Endoscopic ultrasound combines endoscopy with ultrasound imaging to examine the bile ducts and nearby structures.
• ERCP : Endoscopic retrograde cholangiopancreatography (ERCP) combines endoscopy and X-ray imaging. It can identify bile duct abnormalities and, importantly, allow doctors to remove stones or restore drainage during the same procedure.

Benefits of Timely Bile Duct Stone Treatment

• Restore normal bile flow into the intestine
• Help reduce jaundice and elevated bilirubin levels
• Reduce the risk of bile duct infections and related complications
• Prevent further inflammation and gallstone-related pancreatitis
• Relieve symptoms caused by bile duct obstruction
• Support planning for further treatment, including gallbladder removal when needed
• Reduce the risk of complications through timely medical care
• Support recovery and long-term digestive health

Complications if Left Untreated

• Infection and inflammation of the bile ducts, which can become life-threatening if severe.
• A build-up of bilirubin that causes yellowing of the skin and eyes.
• Inflammation of the pancreas when a stone obstructs the shared drainage area.
• Persistent obstruction and infection may affect liver function.
• Ongoing or repeated episodes of pain may occur while obstruction persists.
• A bile duct infection can spread into the bloodstream and cause sepsis.

Prevention and Lifestyle Modifications

• Maintain a balanced diet: Include fibre-rich foods, vegetables, fruit and suitable sources of healthy fats.
• Avoid rapid weight loss: Rapid weight reduction can increase the risk of gallstone formation. Seek medical guidance if weight management is needed.
• Maintain a healthy weight: Gradual, sustainable lifestyle changes may help reduce certain gallstone risk factors.
• Stay physically active: Regular activity can support overall metabolic health.
• Follow medical advice: Attend recommended follow-up appointments after treatment.
• Address the underlying cause: If gallstones remain in the gallbladder, discuss whether gallbladder removal is appropriate.

When Should You See a Doctor?

• Fever or chills with abdominal pain
• Jaundice accompanied by pain or fever
• Severe or persistent abdominal pain
• Repeated vomiting
• Marked weakness, confusion or worsening illness

Pre- and Post-Treatment Care

Pre-Treatment

• Review symptoms, medical history and current medicines.
• Check liver function, blood counts and other relevant blood tests.
• Review ultrasound, MRCP or EUS findings.
• Explain the proposed procedure, expected benefits and possible risks.
• Provide instructions about fasting and medicine adjustments.
• Assess whether antibiotics or other treatment are needed if infection is suspected.

Post-Treatment

• Following the team's instructions about food and fluids.
• Taking prescribed medicines as directed.
• Attending follow-up appointments and reviewing test results.
• Confirming whether a temporary bile duct stent needs removal or replacement.
• Discussing gallbladder removal if gallstones remain in the gallbladder.
• Following wound-care and activity instructions after surgery.