MR Imaging for Incidental Adnexal Mass Characterization

Magn Reson Imaging Clin N Am. 2017 Aug;25(3):521-543. doi: 10.1016/j.mric.2017.03.001. Epub 2017 Apr 28.


Incidentally detected adnexal masses are common, and the overwhelming majority of them are benign. As many of these adnexal masses are considered indeterminate at CT or US, a large number of benign oophorectomies occur. Of the malignant adnexal masses, high-grade primary ovarian neoplasms with fast doubling times and early dissemination are the most common. Due to their aggressive behavior, diagnosis of malignancy by interval growth on surveillance imaging represents an undesirable option. Immediate MR characterization allows for a decreased rate of benign oophorectomies and expedited triage of patients to definitive treatment when malignancy is suspected.

Keywords: Adnexal mass; Borderline tumor; Diffusion-weighted imaging; Endometrioma; Ovarian cancer; Pelvic MR imaging.

Publication types

  • Review

MeSH terms

  • Adnexa Uteri / diagnostic imaging
  • Adnexal Diseases / diagnostic imaging*
  • Diagnosis, Differential
  • Female
  • Humans
  • Incidental Findings*
  • Magnetic Resonance Imaging / methods*
  • Uterine Neoplasms / diagnostic imaging*