Our aim is to evaluate the incidence of Renal Stones on CT KUB scans performed on patients presenting to the Emergency Department of Galway University Hospital and evaluate the presence of alternate diagnoses. Our aimis to then compare these findings to similar studies done in hospitals worldwide. In published studies similar to this studyconducted at hospitals worldwide, CT KUBdetected renal calculi in 48-64% of patients, with alternate diagnosesbeing detectedin 4-15%.

A retrospective study of 100 consecutive CT KUB scans performed on patients in the Emergency Department between 16/09/2016 and 31/12/2016. Aspects of the cases studied included the presence of stones, signs of obstruction, incidence in males vs females and the presence of other pathologies/ alternate diagnoses. Following obtaining results from these 100 scans, the findings were presented to the Consultants and NCHDs of the emergency department on 21st June 2017. A further 100 consecutive scans from this date onwards were then examined.

16/09/2016 – 31/12/2016: In 51% (n=51) of scans performed; there was a diagnosis of renal stones. The ratio of Male: Female was 2.6: 1 In 49% (n=25) of scans in which there was a diagnosis of renal stones, there were signs of obstruction. In 31% (n=16) of scans in which there was a diagnosis of renal stones, there was a known history of renal stones. 40% (n=40) of scans had other pathologies present. 10% (n=10) of scans performed found clinically significant pathologies other than renal...

The incidence of Renal Stones and the incidence of alternate diagnosis on CT KUB in the Emergency Department is in keeping with similar studies done in centres worldwide. This study shows the importance of the history and clinical examination in deciding the most suitable scan for the patient.The diagnosis of renal colic is a clinical one.From the radiologists perspective, the history and exam is vital for the vetting process. Renal stones can be diagnosed using CT without the use of contrast compared to other pathologies,...

Contact Details: Dr. Conor Waters, Senior House Officer, Galway University Hospital, Galway, Ireland. Email: [email protected] Department of Radiology, University Hospital Galway:Professor P. McCarthy. Emergency Department, Galway University Hospital Galway: Mr. J. O'Donnell.

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