Predictability of Computerized Tomography as Compared to Ureteroscopy in Detection of Ureteric Stone in Patients with Indwelling Stents

Objective: The current gold standard for the diagnosis of ureteric stones in patients with a stent situ is ureteroscopy but this study planned to determine positive predictive value computerized tomography (CT) scan among such patients. Methods: This involved who had ureteral and were referred re-evaluation residual after extracorporeal shock wave lithotripsy. These underwent CT-scan detection stone. Later on, was performed stone confirmed on direct visualization. Results: mean age 32.2±8.9 years. Male female ratio 1.7:1. CT shows 252 (70.2%) out which 165 (46.0%) ureteroscopy. yielded sensitivity 88.7 %, specificity 49.7 65.5%, negative 80.4% diagnostic accuracy 69.9% CT
 detecting calculi stents (p < 0.0001). Conclusion: owing its limited cannot replace stents.