[Assessment of ovarian tumors by transvaginal scanning and clinical significance of ultrasonic examination in postoperative follow up]

Abstract

A hundred and sixty cases of ovarian tumor were preoperatively examined by transvaginal (TV) and Transabdominal (TA) scanning and accuracy of the assessment for histologic type was compared. We also examined 56 cases of postoperative ovarian cancer by ultrasonography to detect recurrent lesions. Positive predictive values for serous cysts and endometrial cysts were higher with TV than TA. Sensitivity for cancer was also high, but false negative rate was lower with TV than TA. The results showed that scatter from small particles and small mural echo in the cystic mass are visualized more clearly with TV, so that TV is more useful for assessing histological type of ovarian tumors. Sensitivity and specificity of ultrasonographic examination for detecting intraperitoneal recurrent lesions were 88.2% and 97.4%, respectively. Those for extraperitoneal lesions were 86.7% and 97.6%. Ultrasonography is suggested to be useful for detecting recurrence ovarian cancer especially for experitoneal lesions, as laparoscopy is not effective for such lesions.