Snapshot A 24-year-old woman presents to the emergency room with abdominal pain for the past 6 hours. The pain was originally located around the umbilical area but has since migrated to the right lower quadrant (RLQ). It is described as a 8/10, stabbing pain that is worse with movement. Her past medical history is unremarkable. A physical examination demonstrates tenderness of the RLQ with moderate guarding. Introduction Clinical definition login to view 2 more bullets Epidemiology Demographics login to view 2 more bullets ETIOLOGY Pathogenesis login to view 12 more bullets Presentation Symptoms login to view 7 more bullets Physical exam login to view 9 more bullets imaging Abdominopelvic computed tomography (CT) with IV contrast login to view 2 more bullets Ultrasound login to view 3 more bullets Magnetic resonance imaging (MRI) login to view 1 more bullet Studies Diagnostic testing login to view 13 more bullets Differential Ectopic pregnancy login to view 2 more bullets Ovarian/fallopian tube torsion login to view 2 more bullets Renal colic login to view 2 more bullets Psoas abscess login to view 3 more bullets Epiploid appendagitis login to view 4 more bullets Constipation login to view 2 more bullets Treatment Non-perforated appendicitis login to view 5 more bullets Perforated appendicitis with hemodynamic instability, sepsis, free perforation, or peritonitis login to view 3 more bullets Stable perforated appendicitis login to view 4 more bullets Complications Appendiceal abscess Perforation Sepsis Peritonitis Hemodynamic instability Death