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

Abstract

Abstract aimTo assess role of MDCT in diagnostic evaluation of different renal sinus lesions. MethodsA 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. ResultsOur 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%. ConclusionMDCT accurately evaluated different renal sinus lesions and differentiating between benign and malignant lesions as well as clear cell subtype and unclassified subtype of RCC.