Symptoms and diagnosis
- Biliary colic: steady upper-right or upper-middle abdominal pain, often lasting from about 30 minutes to several hours and sometimes spreading to the back or right shoulder, with nausea or vomiting. Food can trigger an episode, but symptoms are not always meal-related.
- Complications: prolonged pain and tenderness with fever suggests acute cholecystitis; jaundice may indicate a common bile-duct stone; severe central/upper abdominal pain radiating to the back may be pancreatitis.
- Ultrasound and liver blood tests are first-line tests for suspected gallstone disease. Blood count, inflammatory markers and lipase help assess infection or pancreatitis.
- If ultrasound does not show a duct stone but the bile duct is enlarged or liver tests are abnormal, MRCP or endoscopic ultrasound may be needed. ERCP is mainly a therapeutic procedure rather than a routine diagnostic test.
- Heart, lung, ulcer and other conditions can mimic biliary pain. New severe pain requires assessment rather than assuming a known stone is responsible.