Vesicoureteric junction and renal calculi: the value of twinkle artifact

Case contributed by Brendan Cullinane

Presentation

Left sided abdominal pain.

Patient Data

Age: 60 years
Gender: Male

Left vesicoureteric junction (VUJ) stone creating a twinkle artifact; there was no evidence of this calculus with B-mode imaging.

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.

Case Discussion

Non-obstructive left VUJ and left renal calculi were demonstrated using color Doppler to generate the twinkle artifact. These stones were confirmed with CT (not shown).

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Case information

rID: 12932
Published: 4th Feb 2011
Last edited: 13th Aug 2019
System: Urogenital
Inclusion in quiz mode: Included

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