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: ObjectiveThe aim was to study the effectiveness of subjective color Doppler evaluation and spectral Doppler parameters in preoperative characterization of endometrial carcinomas.: MethodsSeventy-six patients with endometrial carcinoma were preoperatively analyzed by color Doppler ultrasound in order to subjectively evaluate the amount of intratumoral blood flow (color score) and to analyze the lowest resistance index (RI), the highest peak systolic velocity (PV), and the highest time averaged maximum velocity (TAMVX). These parameters were analyzed according to clinico-pathological characteristics.: ResultsIn 13 patients no intratumoral arterial vessels were detected by color Doppler examination. No lymph node metastases were found in this group of patients. Positive nodes were found in 24% of patients with detectable arterial vessels, although the difference did not reach the statistical significance. No differences were found in spectral Doppler parameters (RI, PV, TAMVX) according to tumor characteristics or nodal involvement. A higher percentage of cases with a color score of 3 was found in stage >I than in stage I patients (69 vs 42%, P < 0.05), and in patients with myometrial invasion greater than 50% than in those with less than 50% invasion (72 vs 38%; P = 0.05).: ConclusionNodal metastases were found in 24% of patients with detectable vessels at color Doppler examination. Subjective analysis of vessel density correlated >50%, myometrial invasion, but spectral Doppler analysis was not predictive of surgical stage, tumor grade, myometrial invasion, or lymph node metastases. These results do not support the use of preoperative intratumoral blood flow analysis as a clinical test in evaluating tumor characteristics or in predicting lymph node metastases. [Copyright &y& Elsevier]