Author/Editor		Takač, Iztok
Title		Role of preoperative transvaginal sonography, color flow imaging and Doppler waveform analysis in predicting lymph node metastases in patients with ovarian cancer
Type		članek
Source		Gynecol Oncol
Vol. and No.		Letnik 71
Publication year		1998
Volume		str. 211-8
Language		eng
Abstract		The aim of this prospective study was to assess the diagnostic accuracy of transvaginal sonography, color flow imaging, and Doppler waveform analysis of adnexal tumors in predicting lymph node metastases in women undergoing laparotomy for ovarian cancer. In 30 concecutive women undergoing pelvic and paraaortic lymphadenectomy due to ovarian cancer, the morphology of the adnexal mass was evaluated preoperatively with transvaginal sonography. Besides conventional gray-scale analysis as well as localization and intensity of angiogenesis, the resistance index (RI) was computed on the arteries detected with color flow imaging. There were 20 (66.7%) patients with negative and 10 (33.3%) patients with positive lymph nodes. The difference in maximal tumor diameter, maximal thickness of tumor wall, echographic structure or presence of ascites between both groups of patients were not significant. There was no significant difference in the presence or absence of tumor vascularization between both groups of patients. In both groups of patients the mean value of lowest RI was 0.37. Also, the difference in freqency of RI<=0.40 between both groups of patients was not significant. Using conventional echographic analysis as well as colour flow imaging and Doppler waveform analysis of adnexal tumors, according to the author's experience it was not possible to predict lymph node metastases in patients with ovarian cancer.
Descriptors		OVARIAN NEOPLASMS LYMPHATIC METASTASIS ULTRASONOGRAPHY, DOPPLER, COLOR BLOOD FLOW VELOCITY PROSPECTIVE STUDIES LAPAROTOMY ROC CURVE