Gynecology · Oncology

Risk of Malignancy Index (RMI) for Adnexal Mass calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Multilocular cyst (US feature)Solid areas (US feature)Bilateral lesions (US feature)Ascites (US feature)Intra-abdominal metastases (US feature)

Menopausal status (M)

Serum CA-125

U/mL

Allowed range: 0–10000 U/mL

Result

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Clinical inputs

Multilocular cyst (US feature)
Solid areas (US feature)
Bilateral lesions (US feature)
Ascites (US feature)
Intra-abdominal metastases (US feature)
Menopausal status (M)
Serum CA-125 (U/mL)Accepted range: 0 to 10000

Primary source

Jacobs I et al. A risk of malignancy index incorporating CA 125, ultrasound and menopausal status for the accurate preoperative diagnosis of ovarian cancer. Br J Obstet Gynaecol. DOI: 10.1111/j.1471-0528.1990.tb02448.x. PMID: 2223684. Scope: RMI = U × M × CA-125; U = 0 (no US features), 1 (one feature), or 3 (≥2 features among multilocular, solid, bilateral, ascites, metastases); M = 1 premenopausal or 3 postmenopausal; cutoff 200. (1990)

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