Case contributed by Shervin Sharifkashani
Diagnosis certain


Left flank colicky pain, and nausea and intermittent vomiting for one week.

Patient Data

Age: 50 years
Gender: Male

Two calculi with coronal heights up to 8 mm are impacted in the left ureterovesical junction causing pronounced hydroureteronephrosis upstream. The left kidney is relatively enlarged. A few calcified foci in the prostate are seen.

Case Discussion

The case illustrates two calculi impacted in ureterovesical junction on non-contrast MDCT and pronounced hydroureteronephrosis upstream. Calculi are the most common cause of ureteric obstruction and in recurrent cases can lead to chronic renal failure.

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