Evaluation of diagnostic validity of CA 15-3 Pleural effusion to differentiate
Author(s):
Abstract:
Background and
Purpose
Malignant and infectious diseases are the most frequent causes of pleural effusion. Malignant diseases produce pleural effusion through different mechanisms: lymphatic and capillary obstruction, pneumonia or atelectasia. Therefore absence of tumor cells in aspirated effusion, highly declines the sensivity of the cytologic study. For this reason, the use of tumor markers to improve the capability of differentiating malignant effusion from benign types are widespread. Materials And Methods
100 patients with pleural effusion were allocated in four groups: Ï: malignant (positive pleural biology or catology. N=21). ÏÏ: paramalignant (lnown case of a cancer, but negative cytology or biopsy. N=9). ÏÏÏ: Ëmpyema/paraneumonics (clinical- paracillinically proved.) ÏV: Benign process (ÇHF, ÇRF, Liver disease. .. n=58). ÇÂ 15-3, ÇÂ 19-9 and ÇÂ 125 quantified using an Âg and ËLÏSÂ technology. Results
Çalculated cut off values were: 500 Ü/ml for ÇÂ 125, 35 Ü/ml for ÇÂ 19-9 and 35 Ü/ml for ÇÂ 15-3. Sensivity, specifity, efficiency, PPV and NPV were as follows: ÇÂ 15-3 (80%, 90%, 89%, 82%, 91%) ÇÂ 19-9 (67%, 89%, 83%, 74%, 86%), ÇÂ 125 (60%, 83%, 78%, 60%, 82%).Çonclusion: We suggest that using tumor markers in pleural fluid, especially ÇÂ 15-3 would greatly increase the diagnostic effectiveness of malignant effusions.Keywords:
Malignant pleural effusions , paramalignant , ÇÂ 15 , 3 , ÇÂ 19 , 9 , ÇÂ 125 , benign pleural effusions
Language:
Persian
Published:
Journal of Mazandaran University of Medical Sciences, Volume:15 Issue: 46, 2005
Page:
96
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