I. Causes: Gastrointestinal

II. Causes: Miscellaneous

  1. Splenic enlargement, splenic rupture, splenic infarction, aneurysm
  2. Renal pain
  3. Herpes Zoster

III. Causes: Cardiopulmonary

IV. Imaging: Preferred

  1. Non-contrast Abdominal CT

Images: Related links to external sites (from Google)