Receiver operating characteristic curves of transvaginal Doppler blood flow measurements in benign and malignant adnexal tumors.

Abstract

The role of receiver operating characteristic curves of transvaginal Doppler velocimetry in predicting malignancy was evaluated in 80 patients with benign and 40 patients with malignant adnexal tumors. The mean values of peak systolic velocity did not differ significantly. Malignant tumors had a significantly higher end diastolic velocity and mean flow velocity than benign tumors. Benign tumors had a significantly higher ratio of peak systolic to end diastolic velocity, pulsatility index, and resistive index than malignant tumors. The diagnostic accuracies in predicting malignancy were as follows: peak systolic velocity, 62%; end diastolic velocity, 79%; ratio of peak systolic to end diastolic velocity, 63%; mean flow velocity, 73%; pulsatility index, 91%; resistive index, RI 92%. Doppler velocimetry analysis allows us to predict the presence of malignancy with limited reliability.

Color Doppler Ultrasonographic Flow Parameters in the Differentiation of Benign and Malignant Causes of Omental Thickening

“…7Y9 Higher RIs and PIs were reported in malignant lymphadenopathy 21,22 and malignant lesions of salivary glands, 12 breast, 11 and adnexal tumors. 10 Resistive index and PI were higher in metastatic adenopathy from nasopharyngeal carcinoma, where a reduction was noted after radiation therapy. 23 No significant difference was noted between benign and malignant lesions of the parotid glands.…”

Place of Doppler Ultrasound in the Characterization of Ovarian Cysts: About 35 Cases

“…An ovarian cyst is either benign in nature or malignant in nature. About 80% of ovarian tumors are cystic in nature and therefore benign [1]. According to the author Rubin [2], the benign nature of an ovarian cyst is difficult to assert from the outset before the ultrasound based solely on clinical examination.…”