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  • Title: Risk of malignancy index in the preoperative evaluation of pelvic masses.
    Author: Obeidat BR, Amarin ZO, Latimer JA, Crawford RA.
    Journal: Int J Gynaecol Obstet; 2004 Jun; 85(3):255-8. PubMed ID: 15145261.
    Abstract:
    OBJECTIVES: To assess the ability of a risk malignancy index (RMI) based on serum levels of CA 125, ultrasound findings, and menopausal status to discriminate between benign and malignant pelvic masses in a particular population. METHODS: A retrospective study was conducted of 100 women with pelvic masses admitted for laparotomy. The sensitivity and specificity of serum levels of CA 125, ultrasound findings, and menopausal status were calculated both separately and combined into a RMI to diagnose malignancy. RESULTS: The RMI was more accurate than any single criterion in diagnosing malignancy. Using a cut-off level of 200 to indicate malignancy, the RMI gave a sensitivity of 90%, specificity of 89%, positive predictive value of 96%, and negative predictive value of 78%. CONCLUSION: The RMI is able to correctly discriminate between malignant and benign pelvic masses. It is a simple scoring system that can be introduced easily into clinical practice to facilitate the selection of patients who would benefit from primary surgery.
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