From: Diagnostic performance of GI-RADS reporting system in evaluation of adnexal masses
GIRADS grade | Diagnosis | Est. prob. malignancy | Details |
---|---|---|---|
1 | Definitive benign | 0% | Normal ovaries identified, and no adnexal mass seen |
2 | Very probably benign | < 1% | Adnexal lesions thought to be of functional origin, e.g. follicles, corpora lutea, hemorrhagic cysts |
3 | Probably benign | 1–4% | Neoplastic adnexal lesions thought to be benign, such as endometrioma, teratoma, simple cyst, hydrosalpinx, paraovarian cyst, peritoneal pseudocyst, pedunculated myoma, or findings suggestive of pelvic inflammatory disease |
4 | Probably malignant | 5–20% | Any adnexal lesion not included in GI-RADS 1–3 and with one or two findings suggestive of malignancy* |
5 | Very probably malignant | > 20% | Adnexal masses with three or more findings suggestive of malignancy* |