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Cross-sectional study
Ultrasound-based IOTA simple rules allow accurate malignancy risk estimation for adnexal masses
  1. Juan Luis Alcázar
  1. Department of Obstetrics and Gynecology, University of Navarre, Pamplona, Spain
  1. Correspondence to: Dr Juan Luis Alcázar, Department of Obstetrics and Gynecology, Clinica Universidad de Navarra, Avenida Pio XII 36, Pamplona 31008, Spain; jlalcazar{at}

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Adnexal masses are a common clinical problem, with ovarian cancer remaining as the most lethal gynaecological malignancy. Evidence shows that women with ovarian cancer should be primarily treated at specialised centres,1 while women with benign adnexal masses can be treated by general gynaecologists.2 Accurate diagnosis is essential for adequate triage. Currently, the best method for discriminating benign from malignant adnexal masses is ultrasound assessment by an expert examiner.3 The international ovarian tumour analysis (IOTA) group has proposed a simple risk estimation approach based on ultrasound features of the ovarian tumours (five benign and five malignant), …

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  • Competing interests None declared.

  • Provenance and peer review Commissioned; internally peer reviewed.