II. Causes: Gastrointestinal

IV. Causes: Miscellaneous

  1. Leaking Abdominal Aortic Aneurysm
  2. Abdominal wall Hematoma
  3. Psoas abscess

V. Evaluation

  1. Classic Appendicitis or red flags for peritonitis
    1. Complete Blood Count
    2. CT Abdomen with IV contrast
  2. Findings suggest alternative diagnosis
    1. Evaluate for genitourinary and miscellaneous causes as listed above

VI. Imaging: Preferred

  1. Abdominal CT with IV contrast

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