Role of multidetector computed tomography in diagnostic evaluation of different renal sinus lesions

Abstract

Abstract aim: To assess role of MDCT in diagnostic evaluation of different renal sinus lesions. Methods: A prospective study included 40 patients (25 male; 5 female; mean age, ±SD, 54 ± 8 years) proven as renal sinus lesions by US& 64-MDCT. MDCT protocoal included unenhanced and contrast enhanced MDCT (CMP & NP & EP). Comparing MDCT findings with histopathological results were calculated. The study was approved by ethics committee. Results: Our different pathology were: −3 parapelvic cysts (0.4%); 2 peripelvic cysts (0.8%); 3R.A.A. (1.2%); 1 AVM (0.4%); 2 lipomatosis (0.8%), 2XGP (0.8%); 2 hematomas (0.8%); 1 abscess (0.4%); 2 SCC (0.4%); 7 TCC (2.8%); 1 AML (0.4%); 1 hemangioma (0.4%); 2 AML (0.8%); 1 NHL (04%); 1CPDN (0.4%),1 MCN (0.4%), 6 RCC (2.4%); 1 retroperitoneal NHL (0.4%), 1 retroperitoneal plasmacytoma (0.4%). Statistically significant difference was found between HU in CMP and EP (P < 0.001) and between NP & EP (P < 0.001) in cases of RCC, A significant statistical difference was detected among HU in NP and EP in TCC (P value = 0.03). Presence of pseudo-capsule in RCC (P < 0.001), MDCT yields sensitivity 95%, specificity 70%, PPV = 90.2% & NPV = 77.8% and overall accuracy 87.5%. Conclusion: MDCT accurately evaluated different renal sinus lesions and differentiating between benign and malignant lesions as well as clear cell subtype and unclassified subtype of RCC.

Keywords

• MDCT
• Renal sinus lesions