Vesicoureteric junction and renal calculi: the value of twinkle artifact
Left sided abdominal pain.
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Left renal caclulus: a small, markedly echogenic region is seen in the lower pole with B-mode imaging. No soft or hard shadowing was demonstrated. The use of color Doppler produced twinkle artifact posterior to this area identifying a small calculus.
The collecting system and ureter were not dilated, suggesting that the VUJ calculus was non-obstructive.