Gallstone

Definition

Gallstone is the crystallisation of bile due to imbalanced bile component.

Cholelithiasis: Gallstone within gallbladder causing symptoms

Choledocholithiasis: Gallstone within common bile duct causing symptoms

Etiology
  • Type 2 Diabetes Mellitus
  • Crohn’s Disease
  • Liver cirrhosis
  • High cholesterol, fatty acid and carbohydrate diet
  • Recent rapid weight loss
  • High-risk population: 5 F’s: Fat, Fertile, Fair, Female, Forty
Clinical Features
  • Pain
    • Early epigastric vague pain then progresses to debilitating constant right upper quadrant abdominal pain that can radiate to the right shoulder or to the back in a band-like pattern. This pain can last between 30 minutes to 24 hours and does not improve with movement or meals.
  • Signs of Indigestion
    • Abdominal bloating
    • Nausea
    • Intolerance to fatty food
    • Acid reflux for several hours after a meal
  • Signs of biliary obstruction
    • Pruritus
    • Intermittent jaundice
    • Acholic stools
    • Dark urine
Investigations
  • Blood test
    • FBE
    • LFT & Bilirubin
    • Amylase & Lipase levels
  • Imaging
    • Transabdominal ultrasound
    • Endoscopy ultrasound
    • Magnetic Resonance Cholangiopancreatography (MRCP)
    • Endoscopic Retrograde Cholangiopancreatography (ERCP)
    • CT Scan
  • Pregnancy test for every fertile female (as some Tx needs to be altered if pregnancy)
Management
  • Asymptomatic Pts often do not require Tx unless if one of the following is present:
    • Haemolytic anaemia
    • Porcelain gallbladder
    • Gallstone >3cm in size
    • Anticipating bariatric surgery
  • Symptomatic Pts requires active management
    • Pain management
    • Oral dissolution (ursodeoxycholic acid commonly used, most effective for non-calcified cholesterol stones)
    • Extracorporeal shock wave lithotripsy
    • Cholecystectomy