Unenhanced helical CT in the investigation of acute flank pain

Robert Colistro, William C Torreggiani, Iain D Lyburn, Alison C Harris, Nizar A Al-Nakshabandi, Savvas Nicolaou, Peter L Munk
Clinical Radiology 2002, 57 (6): 435-41
Unenhanced helical CT has emerged as the imaging technique of choice for the investigation of patients presenting with acute flank pain and suspected nephroureteric stone disease. There are several signs identifiable on unenhanced CT that support a diagnosis of stone disease. However, there are many pitfalls, that may confound a correct diagnosis. Some of the common pitfalls, together with methods to avoid such occurrences, will be discussed. A review of some of the common alternative diagnoses that may mimic the symptoms of nephroureteric stone disease is illustrated.

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