The ultrasonic features and diagnostic performance of ultrasound for ovarian cystadenofibroma and adenofibroma

Objective: To investigate ultrasonic features of ovarian cystadenofibroma (CAF) and adenofibroma (AF). Methods: Ultrasonic features of 50 cases with ovarian CAF and 7 cases with AF were analyzed, and diagnostic performance of ultrasound was evaluated. Results: According to pathological findings of the CAF cases studied, 46 were benign CAF with 47 tumors identified, and 4 cases were borderline AF. All the seven AF cases were benign with single lesion. Pathologically, most of lesions was serous (53/58, 91.4%). With borderline CAF defined as malignant, the ultrasound differentiated benign from malignant masses of CAF and AF with a sensitivity of 100.0% (95%CI 39.8%-100.0%), specificity of 72.2% (95%CI 58.4%-83.5%), and accuracy of 74.1%. Most benign CAF masses were described as unilocular solid cysts (25/47, 53.2%) with regular morphology (43/47, 91.5%) and well-defined boundaries (46/47, 97.9%). Regular papillary projections (32/47, 68.1%) in CAF lesions manifested no or minimal color Doppler signals（31/32, 96.