Objective: To assess the diagnostic performance of texture analysis indiscriminating between benign and malignant adnexal masses Design: prospective observational cross-sectional study Population: Women aged eighteen and above with known pelvic masses Methods: ultrasound images were collected from participants and transferred into PC for off-line analysis. MaZda software was used to perform the texture analysis. Two texture features applied: Grey-level co-occurrence matrix (GLCM) and wavelet.