MR Imaging for Incidental Adnexal Mass Characterization

Area of Science:

• Gynecologic imaging
• Ovarian neoplasms
• Diagnostic radiology

Background:

• Adnexal masses are frequently discovered incidentally, with most being benign.
• Computed tomography (CT) and ultrasound (US) often yield indeterminate results for adnexal masses.
• This ambiguity leads to a significant number of unnecessary surgeries for benign conditions.

Purpose of the Study:

• To evaluate the utility of magnetic resonance (MR) imaging in characterizing adnexal masses.
• To determine if immediate MR imaging can reduce benign oophorectomies.
• To assess the potential for MR imaging to expedite diagnosis and treatment of malignant adnexal neoplasms.

Main Methods:

• Retrospective review of adnexal mass imaging studies.
• Comparison of CT, US, and MR imaging findings.
• Correlation of imaging findings with histopathological results.

Main Results:

• High-grade primary ovarian neoplasms are the most common malignant adnexal masses.
• These malignant masses often exhibit rapid growth and early spread.
• Delayed diagnosis via interval growth on surveillance imaging is suboptimal.
• Immediate MR imaging can aid in differentiating benign from malignant masses.

Conclusions:

• Magnetic resonance imaging offers improved characterization of adnexal masses compared to CT or US.
• Prompt MR imaging can decrease the rate of unnecessary surgeries for benign adnexal masses.
• Early MR-based diagnosis facilitates timely referral for definitive treatment of suspected malignancies.