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Incidental discovery of small adnexal tumors: how well do the conventional diagnostic models work?

Background:  The increasing use of diagnostic ultrasound in gynecology has led to a growing number of small adnexal tumors being diagnosed incidentally in asymptotic women. Although numerous diagnostic models have been designed to estimate the preoperative risk of malignancy in symptomatic adnexal masses, it is not known whether these methods are also applicable to small tumors. The aim of this study was to investigate the accuracy of a number of diagnostic models in the preoperative diagnosis of clinically undetectable adnexal masses.