Electronic supplementary material
The online version of this article (doi:10.1007/s13089-010-0039-y) contains supplementary material, which is available to authorized users.
A case of a 43-year-old woman presenting with acute left flank pain is reported.
Method and result
Point-of-care ultrasound utilizing color Doppler revealed a twinkling artifact at the left ureterovesicular junction, consistent with a ureterovesicular stone. The sonographic findings and significance of the twinkling artifact are described.