Abstract:
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Purpose: To correlate the significance of the severity of secondary signs of obstruction and the size of ureteral stones in patients submited to endoscopic ureterolithotripsy.
Methods and Materials: Medical record review identified 100 patients who had been referred for endoscopic ureterolithotripsy and underwent to unenhanced helical CT (colimation: 3-5mm, pitch 1-1.5)at Hospital do Rim e Hipertensao/Imaging Diagnosis Department UNIFESP/EPM.All exams were performed untill 24hs prior the surgery. Patients were assessed for stone size measurement, stone location and secondary signs of obstruction as hydronephrosis and perinephric stranding. The secondary signs were quantified in mild, moderate and severe, separately.TC scans were read by 2 experienced abdominal radiologists in consensus.The size of the stone and the severity of secondary signs were compared and the Chi-square partition test was applied .
Results: Stone size varied from 4 to 9 mm, median size: 5mm.Fifteen percent of the patients did not present any sign of obstruction, 60% presented mild signs and 25% moderate and severe. There was no statistical significance between the severity of the secondary signs and the stone size.
Conclusion: The size of ureteral stones are not important to predict the severity of obstruction in patients with ureteral lithiasis.
Questions about this event email: smgold@terra.com.br
Goldman MD, S,
Is the Size of Ureteral Stones Really Important to Predict the Severity of Obstruction in Patients with Ureteral Lithiasis?. Radiological Society of North America 2003 Scientific Assembly and Annual Meeting, November 30 - December 5, 2003 ,Chicago IL.
http://archive.rsna.org/2003/3107713.html
