Background: When ultrasonographic data are restricted, magnetic resonance imaging (MRI) scans can assist identify adnexal mass features. Two European centers have done pioneering work on Dynamic MRI with varied accuracy in diagnosis of complex adnexal lesions.

Aim: To evaluate diagnostic accuracy of Dynamic MRI in diagnosing complex adnexal masses,

Methods: The Department of Radiology conducted a cross-sectional study. Sheikh Zayed hospital, Lahore for 6 months (September 2017-March 2018). Procedure was done for MRI and histopathology for detecting the adnexal masses. Results of MRI were compared with histopathology results, which are taken as gold standard. Reporting was done by researcher herself under supervision of consultant radiologist. SPSS version 20 was used to enter and evaluate the data.

Results: The mean age of patients was 41.57±11.69 years. Dynamic MRI has a 95% sensitivity, specificity, and diagnostic accuracy. 94.37% and 94.7% respectively.

Conclusion: Dynamic MRI is reliable and useful tool with high values of responsiveness, for detecting complicated indeterminate adnexal masseson Doppler considering histopathology as gold standard.Specificity and diagnostic accuracy are important.

Keywords: Dynamic MRI, Histopathology, Complex Adnexal Mass