title: Prospective evaluation of three different models for the pre-operative diagnosis of ovarian cancer.
abstract: OBJECTIVE
  To test the accuracy of the risk of malignancy index, the revised risk of malignancy index and Tailor's regression model to diagnose malignancy in women with known adnexal masses.
  
  
  METHODS
  Prospective collaborative study.
  
  
  METHODS
  Gynaecology Assessment Unit, Department of Obstetrics and Gynaecology, King's College Hospital, London.
  
  
  METHODS
  Sixty-one women with known adnexal masses were examined pre-operatively. Women were recruited from three South London hospitals.
  
  
  METHODS
  The demographic, biochemical and sonographic data recorded for each patient included: age; menopausal status; CA125 levels; tumour volume; ultrasound characteristics; and Doppler blood flow analysis (peak and mean blood velocities, the pulsatility and resistance indices). The diagnosis of malignancy was made for each woman using all three models and the results compared with the final histopathological diagnosis.
  
  
  RESULTS
  Thirty-eight women had benign tumours and 23 had ovarian cancer. Women with malignant tumours were significantly older than those with benign masses. There were also significant differences in CA125 levels, locularity, presence of papillary proliferations and ascites between the two groups. Tailor's regression model achieved a 43% sensitivity and 92% specificity in the diagnosis of malignancy. This compared with a 74% sensitivity and 92% specificity with the risk of malignancy model, and a 74% sensitivity and 89% specificity with the revised risk of malignancy model.
  
  
  CONCLUSIONS
  When applied prospectively all three diagnostic models performed less accurately than originally reported, despite clinical signs of malignancy being present in many cases. It is likely that their accuracy would be even less in a population of women in whom there was a substantial clinical uncertainty. Intra-tumoral blood velocity and CA125 levels were the best individual parameters for discrimination between benign and malignant tumours.
authors: Department of Obstetrics and Gynaecology, King's College Hospital, Denmark Hill, London, UK.
authors: N
authors: N
authors: Aslam
authors: A
authors: A
authors: Tailor
authors: F
authors: F
authors: Lawton
authors: J
authors: J
authors: Carr
authors: M
authors: M
authors: Savvas
authors: D
authors: D
authors: Jurkovic
mesh_terms: D000328:Adult; D000368:Aged; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D008131:London; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000175:diagnosis*; D011446:Prospective Studies; D012044:Regression Analysis; D012680:Sensitivity and Specificity