II. Causes: Gastrointestinal
- Appendicitis
- Intestinal Obstruction
- Constipation
- Diverticulitis
- Infectious Colitis
- Inflammatory Bowel Disease
- Epiploic appendagitis
III. Causes: Vascular
- Leaking aneurysm
- Mesenteric Ischemia
IV. Causes: Genitourinary
- See Acute Pelvic Pain Causes
- Ruptured Ovarian Cyst
- Ovarian Torsion
- Ectopic Pregnancy
- Pelvic Inflammatory Disease
- Ureteral Calculus (Nephrolithiasis)
- Renal pain
- Seminal vesiculitis
V. Causes: Miscellaneous
- Psoas abscess
- Abdominal wall Hematoma
VI. Evaluation
-
Diverticulitis suspected (e.g. fever, Diverticuli history, RLQ tenderness, Rectal Bleeding)
- Empiric treatment for Diverticulitis
- Consider CT Abdomen with oral and IV contrast
- Non-Diverticular cause suspected
- Evaluate for non-gastrointestinal cause as listed above
VII. Imaging: Preferred
- Abdominal CT with oral water and IV contrast