MSCT Diagnosis of Common Renal Cancer Originated from Renal Medulla

Objective To discuss multi-slice CT(MSCT) diagnosis and differential diagnosis of common renal cancers that are originated from renal medulla,including chromophobe cell carcinoma and collecting duct carcinoma.Methods A total of 9 patients with chromophobe cell carcinoma and 2 patients with collecting duct carcinoma encountered at author's hospital were enrolled in this study.The diagnosis was surgically and pathologically proved in all patients.The preoperative dynamic enhanced MSCT imaging features were retrospectively analyzed.All the patients were followed up to check the results.Results According to TNM staging,among 9 cases of chromophobe renal cell carcinoma,2 belonged to T1aN0M0 stage,3 belonged to T1bN0M0 stage,2 belonged to T2aN0M0 stage and 2 belonged to T2bN0M0 stage.Both two patients with collecting duct carcinoma belonged to T4N2M0 stage.Conclusion Imaging findings on MSCT three phase enhanced scanning are definitely helpful in diagnosing the common renal cancers that are originated from renal medulla as well as in differentiating it from the renal cancers that are originated from renal cortex.Besides,it helps to make a further diagnosis of the histological subtype,to evaluate the prognosis and to determine the therapeutic method.