Template:Flank pain DDX

Vascular
- Abdominal aortic aneurysm
- Renal artery embolism
- Renal vein thrombosis
- Aortic dissection
- Mesenteric ischemia
Renal
- Pyelonephritis
- Perinephric abscess
- Perinephric hematoma
- Papillary necrosis
- Renal cell carcinoma
- Obstructive uropathy
  - May or may not be due to nephrolithiasis
- Renal infarction
- Renal hemorrhage
Ureter
- Nephrolithiasis
- Blood clot
- Stricture
- Tumor (primary or metastatic)
Bladder
- Tumor
- Varicose vein
- Cystitis
GI
- Biliary colic
- Pancreatitis
- Perforated peptic ulcer
- Appendicitis (appendix may be pushed to RUQ in pregnancy)
- Inguinal Hernia
- Diverticulitis
- Cancer
- Bowel obstruction
Gynecologic
- Ectopic Pregnancy
- PID/TOA
- Ovarian cyst
- Ovarian torsion
- Endometriosis
- Mittelschmerz or benign ovulatory pain
GU
- Testicular torsion
- Epididymitis
Other
- Shingles
- Lower lobe pneumonia
- Retroperitoneal hematoma, abscess, or tumor
- Epidural abscess
- Epidural hematoma
- Rib contusion/fracture