PMC3424501_01
Preoperative axial (a) and coronal (b) noncontract CTKUB films.
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fig1
A 61-year-old male was referred in order to receive treatment of a left renal stone (Figure 1).
Retrograde pyelography (a) and advancing puncture wire to the skin (b).
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fig2
The target calyx to the skin was checked using ultrasonography before puncturing, to avoid puncturing the surrounding organs. The Lawson retrograde nephrostomy puncture wire (Cook Urological, Bloomington, IN, USA) was set with URS and advanced to the target calyx and advanced to the skin under fluoroscopic guidance (Figure 2).
Initial puncture spot at skin is too dorsally.
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fig3
The puncture wire passed through the renal capsule easily and then tented the skin at the posterior axillary line (Figure 3).