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Case of the Week 261 
What's the most likely diagnosis?
- 29 year-old with flank pain
- Pyelonephritis
- Renal cell carcinoma
- Renal vein thrombosis
- Ureteral calculus
- Free air
Answer:
4. Ureteral calculus
More (Click Discussion Tab)
Ureteral calculus
General considerations
- About 12% of general population will develop a renal calculus by age 70
- Many will have an underlying metabolic disorder
- About 2-3% of general population will experience an attack of ureteral colic
- Much more common in males
- Males:females 4:1
- Peak onset in 3rd decade
- Type of stones
- Calcium oxalate 75%
- Struvite 15%
- Uric acid 5%
- Calcium phosphate 5%
- Cystine 1%
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