II. Causes: Gastrointestinal
III. Causes: Miscellaneous
- Splenic enlargement, Splenic Rupture, splenic infarction, aneurysm
- Renal pain
- Herpes Zoster
IV. Causes: Cardiopulmonary
- Myocardial Ischemia
- Pneumonia
- Empyema
V. Imaging: Preferred
- Non-contrast Abdominal CT