TY - JOUR ID - TI - Does Preoperative Doppler Ultrasound and Resistive Index Measurement Predict the Solid Renal Masses Histopathology? AU - Mohammed Noori Al-Musawi, Mohammed Abdulameer Mahdi, Mohammed Oudah Jasim PY - 2020 VL - 19 IS - 4 SP - 310 EP - 316 JO - Iraqi Postgraduate Medical Journal المجلة العراقية للاختصاصات الطبية SN - 83601608 98932708 AB - BACKGROUND:Renal masses have different histologic types and subtypes, aggressiveness and metastatic potential,depending on the changes in angiogenesis.OBJECTIVE:To differentiate between benign and malignant renal masses and predicate renal tumorshistopathological subtypes by using non invasive methods (Doppler ultrasound and resistive index).PATIENTS AND METHODS:Sixty-eight patients with a renal mass prepared for surgical intervention were involved in thisprospective study. Every patient was underwent Doppler ultrasonography by single operator. Bygray and color Doppler ultrasound the site, location, dimensions, echogenicity and the vascularity ofthe renal mass were assessed. Then by spectral Doppler ultrasound specific vascular waveparameters from intra tumor vessels which include a Peak systolic velocity, end diastolic velocityand Resistive index was checked. All those patients underwent partial or radical nephrectomy andthe histopathological result, were collected.RESULTS:It had been found that the mean RI in patients with clear RCC was 0.59 ± 0.09 and it wassignificantly higher than that of Wilms tumor (mean = 0.49 ± 0.05, (P. value = 0.029), andsignificantly higher than oncocytoma (0.42 ± 0.06) (P. value = 0.025).Patients with malignant renal mass had significantly higher mean RI than that of benign renal mass,0.58±0.11vs 0.42±0.06,(P-Value =0.021) . The optimal cutoff point of RI was 0.47 which gives thehigher sensitivity and specificity of 88.9% and 100% respectively with an accuracy of 94.5%, (PPV)was 100% and (NPV) was 90%.CONCLUSION:The usage of color spectral Doppler US parameter (Resistive index) is considered as an excellentpredictor to differentiate between benign and malignant renal masses, but failed to differentiate andpredicate the malignant renal tumors subtypes.

ER -