| The role of B-mode ultrasonography in the detection of urolithiasis in patients with acute renal colic. | |
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MedLine Citation:
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PMID: 20427874 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study was conducted to assess the diagnostic yield of B-Mode Ultrasonography compared to unenhanced helical CT scan in detecting urinary stones in patients with acute renal colic. This retrospective study comprised of 156 patients who underwent unenhanced urinary tract CT scan and ultrasonography for suspicion of urolithiasis. Both techniques were used to determine the presence or absence, site, size, and number of urinary stones, as well as presence of any other intra-abdominal pathology. For statistical analysis, the sensitivity, specificity, predictive values, and diagnostic accuracy of ultrasonography were measured considering unenhanced CT scan as a gold standard. Unpaired two-tailed student's t-test was used for comparison between mean size of true positive, false positive, and false negative stones. There were 68 patients having 115 urinary stones. Ultrasound identified 54 stones, missed 43, and falsely diagnosed 18 stones. The mean size of true positive, false positive, and false negative stones were 4.8 +/- 3.3 mm, 6 +/- 1.8 mm and 4.18 +/- 3 mm, respectively. There were 23 patients with other intra-abdominal pathologies, equally detected by both techniques. Ultrasound helped in identifying the cause of acute flank pain in 62% of cases. The overall sensitivity, specificity, positive and negative predictive values, and accuracy of ultrasonography in the diagnosis of renal stone disease were 58%, 91%, 79%, 78%, and 78%, respectively. Our study suggests that, despite its limited value in detecting urinary stones, ultrasonography should be performed as an initial assessment in patients with acute flank pain. Unenhanced helical CT should be reserved for patients in whom ultrasonography is inconclusive. |
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Authors:
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Azmi A Haroun; Azmy M Hadidy; Ayman M Mithqal; Waleed S Mahafza; Nusaiba T Al-Riyalat; Rasha F Sheikh-Ali |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Saudi journal of kidney diseases and transplantation : an official publication of the Saudi Center for Organ Transplantation, Saudi Arabia Volume: 21 ISSN: 1319-2442 ISO Abbreviation: Saudi J Kidney Dis Transpl Publication Date: 2010 May |
Date Detail:
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Created Date: 2010-07-19 Completed Date: 2010-08-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9436968 Medline TA: Saudi J Kidney Dis Transpl Country: Saudi Arabia |
Other Details:
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Languages: eng Pagination: 488-93 Citation Subset: IM |
Affiliation:
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Department of Radiology, Jordan University Hospital, Amman, Jordan. Azmi11946@yahoo.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged False Negative Reactions False Positive Reactions Female Flank Pain / etiology, ultrasonography Humans Male Middle Aged Predictive Value of Tests Renal Colic / complications, radiography, ultrasonography* Retrospective Studies Sensitivity and Specificity Tomography, X-Ray Computed Urography / methods Urolithiasis / etiology, radiography, ultrasonography* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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