Gynecologic imaging reporting and data system (GI-RADS)

The Gynecologic Imaging Reporting and Data System (GI-RADS) is a reporting system that was created for reporting the findings in adnexal masses based on transvaginal ultrasonography.

Findings are classified into five categories 1:

  • GI-RADS 1
    • normal ovaries identified and no adnexal mass seen
  • GI-RADS 2
  • GI-RADS 3
  • GI-RADS 4
    • any adnexal lesion not included in GI‐RADS 1–3
    • in addition, the lesion has one or two findings suggestive of malignancy such as:
      • thick papillary projections
      • thick septations
      • solid areas
      • ascites
      • vascularization within solid areas
      • papillary projections
      • a central area of a solid tumor visualized on color or power Doppler
  • GI-RADS 5
    • adnexal masses with three or more findings suggestive of malignancy (as listed above)

GI-RADS has shown good performance with a sensitivity and specificity of 92% and 97% of diagnosing malignant tumors when compared to a final histological diagnosis 2.

Risk of malignancy 1:

  • GI-RADS 1: 0%
  • GI-RADS 2: <1%
  • GI-RADS 3: 1-4%
  • GI-RADS 4: 5-20%
  • GI-RADS 5: >20%
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rID: 60638
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