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Evaluation of Serum Nidogen-2 as a Screening and Diagnostic Tool for Ovarian Cancer.
INTRODUCTION: Ovarian cancer is a relatively common occurrence with the formation of a tumour in the ovaries and is the leading cause of death in the gynecological field. Despite enormous efforts, there are no successful screening methods developed until now to decrease mortality in this regard.
AIM: To evaluate nidogen-2 as a new tumour marker combined with higher sensitivity, specificity and accuracy than carbohydrate antigen (CA-125) and Doppler ultrasound to improve early diagnosis of ovarian cancer.
PATIENTS AND METHODS: One hundred and forty-four qualified women with a preliminary diagnosis of adnexal mass were subjected to history, examination, transvaginal Doppler ultrasound and Quantitative assessment of serum level of CA-125 and nidogen-2 followed by the resection of the masses, which were sent for histopathological examination.
RESULTS: One-hundred and sixteen cases were benign and 28 cases were malignant. The surgical procedures ranged from limited resection to radical hysterectomy. There was a highly significant correlation between both serum nidogen-2 and CA-125 and the results of histopathological examination (p = 0.0001). Serum nidogen-2 had 91.6% sensitivity, 62% specificity, 37.1% positive predictive value, 97.9% negative predictive value and 68% accuracy (p < 0.05).
CONCLUSION: Nidogen-2 is a new promising ovarian malignancy biomarker that correlates closely with ultrasound and CA125. It did improve the accuracy of diagnosis, but further studies are needed.
AIM: To evaluate nidogen-2 as a new tumour marker combined with higher sensitivity, specificity and accuracy than carbohydrate antigen (CA-125) and Doppler ultrasound to improve early diagnosis of ovarian cancer.
PATIENTS AND METHODS: One hundred and forty-four qualified women with a preliminary diagnosis of adnexal mass were subjected to history, examination, transvaginal Doppler ultrasound and Quantitative assessment of serum level of CA-125 and nidogen-2 followed by the resection of the masses, which were sent for histopathological examination.
RESULTS: One-hundred and sixteen cases were benign and 28 cases were malignant. The surgical procedures ranged from limited resection to radical hysterectomy. There was a highly significant correlation between both serum nidogen-2 and CA-125 and the results of histopathological examination (p = 0.0001). Serum nidogen-2 had 91.6% sensitivity, 62% specificity, 37.1% positive predictive value, 97.9% negative predictive value and 68% accuracy (p < 0.05).
CONCLUSION: Nidogen-2 is a new promising ovarian malignancy biomarker that correlates closely with ultrasound and CA125. It did improve the accuracy of diagnosis, but further studies are needed.
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