Preoperative staging of renal cell carcinoma with multidetector CT.

摘要: Purpose To evaluate the diagnostic accuracy of multidetector computed tomography (MDCT) for preoperative staging renal cell carcinoma (RCC) using 1997 TNM (tumor, node, metastasis) classification. Materials and methods We conducted a retrospective review MDCT in 57 consecutive patients with RCC performed tumor before radical (n = 51) or partial nephrectomy 6). The scanning protocol consisted unenhanced biphasic contrast-enhanced scans during corticomedullary nephrographic phases. surgical-histopathologic were system. results compared histopathological results. Agreement between two was evaluated kappa (kappa) statistic. Results Consistency histopathologic excellent T (kappa= 0.87), fair N 0.40), M 1.00). Fifty-one tumors correctly staged, five overstaged one understaged by MDCT, an overall 89%. able to identify localize extension thrombus all 10 patients. In evaluation nodal involvement, 42 (74%) 11 (19%) overstaged, four (7%) understaged. Conclusion dynamic contrast enhancement is accurate method RCC. multiplanar reconstruction capability enables reliable detection characterization tumor, but involvement lymph nodes still difficult predict because it based on node size criterion only.