ROLE OF DISTAL URETER DENSITY IN PREDICTING IMPACTION IN URETERAL STONES

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J. Mohammed Farooq, Dev Krishna Bharathi

Abstract

ABSTRACT


A prospective study of patients with ureteral calculi operated by ureteroscopy. Using a noncontrast CT KUB, the density of the ureter just below and above the stone was calculated. 528 patients underwent ureteroscopy in which 94 patients were qualified as having impacted ureteric calculi. There was no statistical difference between the two groups in the parameters such as age, gender, density of the stone and density of the ureteric soft tissue just above the stone (p value 0.39,0.36,0.63 and 0.14 respecively). There was a statistical difference between the two groups in the parameters such as longest diameter of the stone and density of the ureteric soft tissue just below the stone (p value 0.03 and 0.001 respectively). In patients who exceeded the ureteric density cut off value of 26 HU just below the calculi, impaction was found with asensitivity of 86%, specificity of 85%, positive predictive value of 85%, and negative predictive value Using logistic regression models and adjusting for the stone size, patients with higher HU under the stone had a higher probability of developing impaction (p value = 0.001). CT KUB scan showing ureteral soft tissue density just below the stone of more than 26HU is associated with calculus impaction, which could help in deciding the management of ureteric calculus.


 


 

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How to Cite
Dev Krishna Bharathi, J. M. F. (2024). ROLE OF DISTAL URETER DENSITY IN PREDICTING IMPACTION IN URETERAL STONES . Obstetrics and Gynaecology Forum, 34(3s), 932–937. Retrieved from http://obstetricsandgynaecologyforum.com/index.php/ogf/article/view/400
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