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Table 1 Schematic presentation of four different RMI score algorithms

From: Diagnostic extended usefulness of RMI: comparison of four risk of malignancy index in preoperative differentiation of borderline ovarian tumors and benign ovarian tumors

Variants

Ultrasound Score (U)a

Menopausal Score (M)

Tumor Size (S), cmb

RMI I = U × M × CA-125

U = 0 (0 parameter)

M = 1 (premenopausal)

Not applicable

U = 1 (1 parameter)

M = 3 (postmenopausal)

 

U = 3 (≥2 parameters)

  

RMI II = U × M × CA-125

U = 1 (0 or 1 parameter)

M = 1 (pre-menopausal)

Not applicable

U = 4 (≥2 parameters)

M = 4 (postmenopausal)

 

RMI III = U × M × CA-125

U = 1 (0 or 1 parameter)

M = 1 (premenopausal)

Not applicable

U = 3 (≥2 parameters)

M = 3 (postmenopausal)

 

RMI IV = U × M × S × CA-125

U = 1 (0 or 1 parameter)

M = 1 (premenopausal)

S = 1 (< 7)

U = 4 (≥2 parameters)

M = 4 (postmenopausal)

S = 2 (≥7)

  1. aParameters: presence of a multilocular cystic lesion, solid areas, a bilateral lesion, ascites, and intra-abdominal metastasis
  2. bSingle greatest diameter