LIAN Shi-dong1, WANG Li-xia2, DU Zi-lei3, TAN Xiao-tian1, OUYANG Han2, ZHOU Chun-wu2
1.Department of Radiology, Dalian Central Hospital, Dalian Liaoning 116033, China; 2.Department of Radiology,Cancer Hospital of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100021, China;3.Department of Radiology, Traditional Chinese Medicine Hospital of Puyang City, Puyang Henan 457000, China
Abstract：Objective: To analyze and discuss the appearance and specificity of papillary renal cell carcinoma(RCC) using magnetic resonance imaging. Materials and Methods: Ten patients(10 lesions; 6 female, 4 male; mean age 53 years) with pathologically proved papillary RCC were reviewed retrospectively. MR imaging was performed with a 0.5T imaging unit(Philips) by using body coil. T1-weighted imaging(T1WI), T2-weighted imaging(T2WI), T2-weighted imaging with spectral presaturation with inversion recovery(T2WI/SPIR) images and Gd-T1WI/3D images were obtained in all patients. Result: All of the tumors except one(9/10, 90%) showed heterogeneous hyper-intense than the unaffected renal cortex on their T2WI or T2WI/SPIR; six tumors showed heterogeneous mixed intense and four tumors showed homogeneous iso-intense in their T1WI than the unaffected renal cortex. Six tumors showed mild enhancement and four showed moderate enhancement on contrast enhanced scans. Cystic renal carcinoma(3 cases) and cystic degeneration(2 cases) were found in five cases pathologically, the other five cases showed solid tumors, hemorrhage and necrosis were found in 8 cases. Conclusion: There were some characteristics in the MRI appearance of papillary renal cell carcinoma, and these characteristics may be helpful in predicting a specific subtype of renal cell carcinoma.
2007, Vol. 18 
