Bosniak Classification and other Variables in the Prediction of Renal Cystic Masses.

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To evaluate the variables of cystic renal lesions to predict the renal tumors. An observational study. Urology Department, Ankara Yüksek Ihtisas, Samsun Research and Training Hospitals, Turkey, from January 2013 to June 2017. Records of patients with renal cystic lesions were retrospectively evaluated. Preoperative CT results in terms of diameter number and enhancement; and clinical variables such as gender body mass index [(weight (kg)/ height²(m)] and smoking status were recorded. Student's t-test and ANOVA were used for determing significance, which was set at p<0.05. Due to pathology results, all group I patients were benign, 7.9% (3/38) of group II, 31.8% (7/22) of group II-F, 55.3% (21/38) of group III, 69% (40/58) group IV patients were found to be malignant. For clinical factors, obesity and smoking, while for radiological parameters, about 59.3 +11.7 HU enhancement were found to be predictor significant of malignancy (all p<0.05). No significant difference was observed between cystic lesion diameter number or laterality (right/left) and malignancy. Renal cysts have a high malignancy possibility in the patients with history of smoking in the past or actively, high BMI, and preoperative CT with about 59.3 +11.7 HU post-contrast enhancement.