II. Causes: Age over 55 years old

  1. Biliary Colic or Cholecystitis (12-20%)
  2. Appendicitis (4-15%)
    1. Increased Appendiceal gangrene risk
    2. Increased Appendiceal rupture risk
  3. Intestinal Obstruction (12%)
  4. Perforated viscus (7%)
  5. Diverticulitis (6%)
  6. Incarcerated Hernia (4%)
  7. Renal Colic or Nephrolithiasis (4%)
  8. Cancer (4%)

III. Causes: Age under 55 years old

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