Renal metal coils can cause complications years after their initial placement. Stones can form around migrated coiling material. The resulting robust composite stones are to be taken into consideration if stones are identified adjacent to renal coil material. Retrograde intrarenal surgery, which enables identification and simultaneous removal of the stones and the coiling material, should be the preferred first-line treatment option.
BMC Urol. 2013;13(29) © 2013 BioMed Central, Ltd.