| Effectiveness of noncontrast computed tomography in evaluation of residual stones after percutaneous nephrolithotomy. | |
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MedLine Citation:
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PMID: 17705749 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: We prospectively compared the sensitivity of antegrade pyelography (AGP), plain film radiography (KUB film), and noncontrast thin-slice abdominal CT for detecting residual stones after percutaneous nephrolithotomy (PCNL). PATIENTS AND METHODS: We prospectively evaluated 50 patients (53 renal units) who underwent PCNL for radiopaque renal pelvic stones with noncontrast abdominal CT 1 month postoperatively. We compared the number and size of residual fragments, as determined by immediate postoperative AGP and 1-month KUB film and CT scan. RESULTS: Stone-free rates according to AGP, KUB film, and noncontrast CT were 73.6% (39/53), 62.3% (33/53), and 20.8% (11/53), respectively. However, if clinically insignificant residual fragments are included in the success rates, these rates increased to 84.9% (45/53), 83.0% (44/53), and 41.5% (22/53), respectively. Of the 22 patients in whom residual stones were detected by CT but not by KUB film, 10 (45.5%) had stones >4 mm in diameter on CT, with a mean size of 7.4 mm. The sensitivity for the detection of residual fragments was 47.6% for KUB films as judged by noncontrast CT. After CT, seven patients received extracorporeal shockwave lithotripsy for residual stones. CONCLUSIONS: Noncontrast thin-slice abdominal CT was the most accurate imaging method to determine the stone-free rate after PCNL. Noncontrast abdominal CT gives accurate information for selecting patients who may benefit from additional treatment and for planning follow-up. |
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Authors:
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Jinsung Park; Bumsik Hong; Taehan Park; Hyung Keun Park |
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Publication Detail:
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Type: Evaluation Studies; Journal Article |
Journal Detail:
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Title: Journal of endourology / Endourological Society Volume: 21 ISSN: 0892-7790 ISO Abbreviation: J. Endourol. Publication Date: 2007 Jul |
Date Detail:
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Created Date: 2007-08-20 Completed Date: 2007-10-10 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8807503 Medline TA: J Endourol Country: United States |
Other Details:
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Languages: eng Pagination: 684-7 Citation Subset: IM |
Affiliation:
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Department of Urology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Contrast Media* Female Humans Kidney Calculi / radiography* Male Middle Aged Nephrostomy, Percutaneous* Tomography, X-Ray Computed* |
| Chemical | |
Reg. No./Substance:
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0/Contrast Media |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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