To evaluate the accuracy of sonographic diagnosis in renal trauma we compared the sonog-raphic findings with the computed tomographic findings in 14 patients performed sonography and computed tomography simultaneously. The common findings of renal injury on computed tomography and sonography were periren-al hematoma intrarenal hematoma and parenchymal tear. Of these patients 10cases were managed successfully with conservative therapy 2 cases underwent surgery and 2 cases were performed by external drainage. Computed tomography is certainly the most effective method in regard to evaluation of the exact extent of parenchymal and /or vascular damage to the kidney. But sonography provides on excellent inxpensive diagnostic tool for initial diagnostic study of patients with renal trauma especially for the detection of hematoma. Sonography is the best screening method in patients with minimal renal trauma and computed tomography must be performed in the cases with abnormal sonographic findings.