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© 2005 by the American Institute of Ultrasound in Medicine
J Ultrasound Med 24:1467-1473 • 0278-4297

Differentiation of Small Adnexal Masses Based on Morphologic Characteristics of Transvaginal Sonographic Imaging

A Multicenter Study

Enrico Ferrazzi, MD, Andrea A. Lissoni, MD, Danilo Dordoni, MD, Diego Trio, MD, Laura Redaelli, MD, Costantino Rusconi, MD, Patrizia Sanpaolo, MD, Irene Floriani, PhD, Valter Torri, MD, Silvano Zaglio, MD, Adriana Valcamonico, MD, Francesca Piol, MD, Nicola Berlanda, MD and Gerardo Zanetta, MD

Department of Obstetrics and Gynecology, Ospedale San Gerardo, University of Milan Bicocca, Monza, Italy (A.A.L., D.T., G.Z.); Department of Obstetrics and Gynecology, Dipartimento di Scenze Cliniche Sacco Milano, University of Milan, Milan, Italy (E.F.); Department of Obstetrics and Gynecology, Spedali Civili di Brescia, University of Brescia, Brescia, Italy (D.D., S.Z., A.V.); Department of Obstetrics and Gynecology, Ospedale Valduce di Como, Como, Italy (L.R., F.P.); Department of Obstetrics and Gynecology, Ospedale di Lecco, Lecco, Italy (C.R.); Department of Obstetrics and Gynecology, Policlinico San Matteo, University of Pavia, Pavia, Italy (P.S.); Department of Biostatistics, Mario Negri Institute, Milan, Italy (I.F., V.T.); and Department of Obstetrics and Gynecology, Ospedale San Paolo, University of Milan, Milan, Itlay (N.B.).

Address correspondence to Andrea A. Lissoni, MD, Department of Obstetrics and Gynecology, Ospedale San Gerardo, University of Milan Bicocca, Via Solferino 16, 20052 Monza, Italy. E-mail: andreaalberto.lissoni{at}unimib.it

Objective. The purpose of this study was to assess the diagnostic accuracy of transvaginal sonographic examination of small adnexal masses by simple descriptive sonographic scoring. Methods. In a prospective multicenter study, 4 teaching hospitals and 2 regional hospitals with homogeneous standard sonographic equipment and operator experience recruited 677 consecutive patients with small adnexal masses of less than 5 cm. Morphologic scoring was obtained for each mass and recorded. The management of the mass was based on local protocols. The minimal requirement was that surgery had to be performed for complex masses scoring 8 or higher, and follow-up of at least 12 months had to be performed and recorded for patients not admitted to surgery. Sonographic results were compared with pathologic reports and follow-up findings. Results. Fifty-two malignant tumors (19 borderline, 15 stage I–II, 15 stage III–IV, 2 tubal carcinomas, and 1 ovarian lymphoma), 243 benign tumors at pathologic examination, and 382 masses defined as benign according to follow-up findings were observed. Malignant tumors had a significantly higher mean ± SD morphologic score (11.2 ± 2.7) than benign masses (6.2 ± 2.5) (P = .001). No difference was observed in the scoring assignment of malignant masses in different centers (P = .56). With a score of 8 or higher, the likelihood ratio was 3.61 (95% confidence interval, 3.09–4.21); sensitivity, 92%; specificity, 76.9%; and positive predictive value, 25.6%. Conclusions. Our results provide evidence that descriptive morphologic scoring may overcome the subjectivity of interpretation of morphologic characteristics in small masses, and, at the same time, it can incorporate criteria to avoid simplistic description of a complex mass.

Key Words: morphologic score • ovarian cancer • ovarian masses • transvaginal sonography

Abbreviations: CI, confidence interval




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Copyright © 2005 by the American Institute of Ultrasound in Medicine.