ROLE OF MAGNETIC RESONANCE IMAGING IN THE EVALUATION OF SONOGRAPHICALLY INDETERMINATE ADNEXAL MASSES

Abstract

IntroductionDetermining the nature of a sonographically indeterminate adnexal masses has great clinical importance, decisions regarding the type and extent of surgery necessary and who should perform this surgery depend on this judgment. An adnexal mass is defined as indeterminate on ultrasonography when it cannot be exactly placed into either the benign or malignant category, even after Doppler assessment, or one for which the site of origin from the ovary, uterus or another pelvic structure, remains to be established. Pelvic Ultrasonography is the initial imaging modality in the evaluation of women with clinically suspected adnexal masses, However, sonography is limited by: it's low specificity for the diagnosis of benignity, leading to as many as 20 % of adnexal masses being classified as indeterminate. For women with theses indeterminate masses MR Imaging provides excellent contrast resolution, resulting in accurate tissue characterization and improved anatomic delineation. The ACR O-RADS MRI committee developed an evidenced-based risk stratification scoring system based on existing diagnostic efficacy studies, and validated by an ongoing prospective multicenter clinical trial.. Aim of the work The aim of this work was to assess the ability of MRI to characterize sonographically indeterminate adnexal masses.