Mirizzi syndrome – stone impacted in Hartmann’s causes adherence to CBD, loss of Calot’s triangle.

  • Type 1 - External compression

  • Type II - <1/3 bile duct

  • Type III – 1/3 – 2/3 bile duct

  • Type IV >2/3 bile duct

  • Type I

    • Subtotal cholecystectomy
    • Leave posterior wall where it is adherent to bile duct
    • Ligate cystic duct if identified and still patent
      • If not found, drain left in gallbladder fossa.
  • Type II-IV

    • Presence of fistula due to erosion of impacted gallstone in Hartmann’s pouch.
    • CBD reconstruction with Roux-en-Y hepaticojejunostomy