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Related Experiment Videos

Computerized tomography guided access for percutaneous nephrostolithotomy.

Brian R Matlaga1, Ojas D Shah, Ronald J Zagoria

  • 1Department of Urology, Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA.

The Journal of Urology
|June 11, 2003
PubMed
Summary
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Computerized tomography (CT)-guided percutaneous nephrostolithotomy (PNL) offers a safe solution for patients with complex renal anatomy. This technique facilitates effective kidney stone removal in challenging cases, improving patient outcomes.

Area of Science:

  • Urology
  • Medical Imaging
  • Nephrology

Background:

  • Percutaneous nephrostolithotomy (PNL) is a standard procedure for kidney stone removal.
  • Fluoroscopic guidance for PNL may pose risks in patients with aberrant renal anatomy.
  • Cross-sectional imaging can enhance safety during percutaneous access.

Purpose of the Study:

  • To evaluate the utility of computerized tomography (CT)-guided percutaneous access for PNL in patients with anatomical abnormalities.
  • To assess the safety and efficacy of CT-guided access in challenging PNL cases.

Main Methods:

  • Retrospective review of PNL procedures performed between June 2000 and December 2001.
  • Identification of patients requiring CT-guided percutaneous access due to anatomical challenges.

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  • Analysis of access success, complications, and subsequent stone clearance.

    • Main Results:

    • CT-guided percutaneous access was utilized in 5 patients (3%) for 6 access tracks.
    • Anatomical abnormalities included retrorenal colon (2 patients) and spinal dysraphism (3 patients).
    • Successful and complication-free percutaneous access was achieved in all cases, with 83% stone-free rates after PNL.

    Conclusions:

    • CT-guided percutaneous access is an infrequently required but valuable technique for PNL.
    • This method is crucial for ensuring safe and effective PNL in select patients with complex renal anatomy.
    • CT guidance facilitates successful stone removal when standard fluoroscopic access is high-risk.