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Human Reproduction, Vol. 14, No. 3, 858-862, March 1999
© 1999 European Society of Human Reproduction and Embryology

Three-dimensional ultrasonographic evaluation of ovarian tumours: a preliminary study

Toshiyuki Hata1,3, Toshihiro Yanagihara1, Keiji Hayashi1, Chizu Yamashiro1, Yohichi Ohnishi1, Masashi Akiyama1, Atsushi Manabe2 and Kohji Miyazaki2

1 Department of Perinatology, Kagawa Medical University, 1750–1 Ikenobe, Miki, Kagawa 761-0793, and 2 Department of Obstetrics and Gynecology, Shimane Medical University, Izumo 693, Japan

Our objective was to determine the accuracy of three dimensional (3D) ultrasonography in the differentiation of ovarian tumours. Women (n = 20) with ovarian tumours (13 benign and seven malignant) were first examined using two-dimensional (2D) ultrasonography and were then evaluated with three-dimensional (3D) ultrasonography. All patients underwent surgery within 7 days of 2D and 3D ultrasonographic evaluations, and a histopathological diagnosis was made. A 2D ultrasonographic diagnosis of malignancy was done using an established scoring system. Diagnostic criteria for ovarian malignancy by 3D ultrasonography were: irregular thick septa, irregular papillary projection, mostly solid tumour, high echogenicity, and irregular inner wall. Compared with 2D ultrasound, 3D ultrasound had a significantly higher specificity (P < 0.005) and accuracy (P < 0.01), and a significantly lower false positive rate (P < 0.005). Our results suggest that 3D ultrasonography might be a better means of differentiating between malignant and benign ovarian tumours. However, in view of the small number of ovarian tumours, these observations must be considered preliminary.

Key words: 2D ultrasonography/3D ultrasonography/ovarian cancer/tumours

3 To whom correspondence should be addressed


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