PMC4996585_01
CT of the abdomen without contrast showing surgical clips near the ureteropelvic junction (UPJ). From this image, it is difficult to tell whether the clips are eroding into the ureter.
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There were no calculi seen (Fig. 1).
Calcified metal clip showing lasering of the encrustation.
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The encrustation was lasered with a holmium laser fiber and the stone fragments and clip were retrieved with a basket (Fig. 2).
Suture material seen eroding into the UPJ and proximal ureter.
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This fragment was then grasped and removed with a basket (Fig. 3).