Amjad Sattar, Mahnoor Hafeez.
Efficacy of plain computed tomography (ct) abdomen for urinary stone disease in symptomatic patients.
Isra Med J Jan ;12(3):126-30.

Objective: To assess the Efficacy of Plain Computed Tomography (CT) Abdomen to identify the frequency of Urinary stone disease in symptomatic Patients. Study Design: Retrospective descriptive cross- sectional study Place and Duration: Dow Institute of Radiology, Dow University of Health Sciences, Karachi, Pakistan from 25th February 202 to 15th March 2020. Methodology: Retrospectively, data of patients underwent non-contrast CT KUB examination, presented with acute flank pain and had CT scan according to thin section plain CT Abdomen protocol were assessed. Findings of urolithiasis, size, site of urolithiasis, hydronephrosis, other incidental findings found were recorded and analysed. Results: Among total of 485 patients, 45.9% of symptomatic patients was found to have obstructing urinary stones, with majority being located in distal ureter (11.75%), with mean calculus size of 10mm. Stone burden was significantly higher in male population as compared to female population (66.8% vs. 33.1%; p = 0.138). Age stratification showed significant association of stone disease with younger age group [<30yrs] as compared to other age groups. There was a positive correlation between size of ureteric calculus and degree of hydronephrosis. Almost, 15.6% patients had absolutely normal CT scan findings, 38.3% had Incidental CT findings and 8.6% of the subjects were found to have acute conditions mimicking renal colic. Appendicitis 2.3%, Spondylolysis 2.3%, Pelvic Masses 1.4%, PUJO 1.4% and Abdomino-pelvic abscesses 1.2% were the leading significant incidental findings at Plain CT. Conclusion: The frequency of Urinary stone disease at Plain CT Abdomen in patients presenting with flank pain is found to be 45.9% and 8.6% of the population have other acute abdominal condition.

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