Non-contrast Computed Tomography Versus Intravenous Pyelography in the Diagnosis of Urolithiasis and Urinary tract obstruction: A Prospective Study

Sumeet Sabharwal; Poonam Sharma; Manik Mahajan

Volume : VIII, Issue : II, February - 2019

Non-contrast Computed Tomography Versus Intravenous Pyelography in the Diagnosis of Urolithiasis and Urinary tract obstruction: A Prospective Study

Sumeet Sabharwal, Poonam Sharma, Manik Mahajan

Abstract :

Objectives: To evaluate the diagnostic accuracy of non contrast computed tomography (NCCT) and intravenous pyelography (IVP) in the diagnosis of urolithiasis and urinary tract obstruction in the same patient. Material and Methods: 300 USG diagnosed or suspected patients with urolithiasis and/or ureteral obstruction were included. NCCT was performed followed by IVP. Presence of calculi, hydronephrosis and hydroureter, cysts and ureteric wall thickening were evaluated. Perinephric fat stranding in NCCT and delayed excretion of contrast in IVP were also evaluated. Results: Majority of patients were males with M:F ratio of 1.6:1. On NCCT stones were detected in 190 patients while in IVP, stones were detected in 154 patients. The findings of hydronephrosis, hydroureter and renal cortical cysts were more common on NCCT than IVP examination. Additional incidental findings were more common on NCCT (24/300, 8.0%) than IVP (2/300, 0.7%). Conclusions: NCCT compared to IVP had a higher detection rate for urolithiasis and ureterolithiasis. Detection of significant additional findings was additional benefit of NCCT over IVP