سامانه مدیریت نشریات علمی دانشگاه علوم پزشکی مشهد

Kakarla, Bhaskar, Kuruva, Varaprasad, Deme, Swaroopa, Babu Banda, Sekhar, Narahari, Narendra Kumar, Gongati Kruparao, Paramjyothy. (1400). Utility of Cancer ratio (serum LDH: pleural fluid ADA) for predicting malignancy in patients with exudative pleural effusion. , 9(2), 817-823. doi: 10.22038/jctm.2021.55782.1317
Bhaskar Kakarla; Varaprasad Kuruva; Swaroopa Deme; Sekhar Babu Banda; Narendra Kumar Narahari; Paramjyothy Gongati Kruparao. "Utility of Cancer ratio (serum LDH: pleural fluid ADA) for predicting malignancy in patients with exudative pleural effusion". , 9, 2, 1400, 817-823. doi: 10.22038/jctm.2021.55782.1317
Kakarla, Bhaskar, Kuruva, Varaprasad, Deme, Swaroopa, Babu Banda, Sekhar, Narahari, Narendra Kumar, Gongati Kruparao, Paramjyothy. (1400). 'Utility of Cancer ratio (serum LDH: pleural fluid ADA) for predicting malignancy in patients with exudative pleural effusion', , 9(2), pp. 817-823. doi: 10.22038/jctm.2021.55782.1317
Kakarla, Bhaskar, Kuruva, Varaprasad, Deme, Swaroopa, Babu Banda, Sekhar, Narahari, Narendra Kumar, Gongati Kruparao, Paramjyothy. Utility of Cancer ratio (serum LDH: pleural fluid ADA) for predicting malignancy in patients with exudative pleural effusion. , 1400; 9(2): 817-823. doi: 10.22038/jctm.2021.55782.1317

Utility of Cancer ratio (serum LDH: pleural fluid ADA) for predicting malignancy in patients with exudative pleural effusion

Journal of Cardio-Thoracic Medicine
مقاله 6، دوره 9، شماره 2، شهریور 2021، صفحه 817-823    اصل مقاله (823.52 K)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.22038/jctm.2021.55782.1317
نویسندگان
Bhaskar Kakarla* 1؛ Varaprasad Kuruva2؛ Swaroopa Deme3؛ Sekhar Babu Banda4؛ Narendra Kumar Narahari5؛ Paramjyothy Gongati Kruparao5
1Nizams Institute of Medical Sciences, Punjagutta, Hyderabad, Telangana, India 500082
2Consultant Pulmonologist Medicover Hospital Kurnool Andhrapradesh India
3General Medicine, Nizams Institute Of Medical Sciences,Hyderabad,Telangana,India.
4Junior Resident, Department Of Pulmonary Medicine,Nizams Institute Of Medical Sciences ,Hyderabad, India 500082
5Pulmonologist, Department of Pulmonary Medicine Nizams Institute of Medical Sciences Hyderabad,India 500082
چکیده
Introduction: Pleural effusion is an accumulation of fluid in the pleural space. It can be transudative or exudative. Mechanisms like alteration in Starling’s forces lead to transudative effusions while inflammation and infiltration by infections, malignancy, connective tissue diseases, etc lead to exudative effusions. Tuberculosis, viral, bacterial infections, and malignancy are common causes of exudative effusions whereas congestive heart failure, renal failure, and liver failure, etc are common causes of transudative effusions. Nearly 40% of patients with malignancy have pleural effusion at the time of presentation. Bronchogenic carcinoma, carcinoma of the breast, lymphoma are the leading causes of malignant pleural effusion (MPE) followed by gastrointestinal, genitourinary, and gynecological causes. Pleural fluid Adenosine DeAminase (ADA) has good diagnostic sensitivity and specificity for tuberculosis whereas pleural fluid cytology /biopsy are the main diagnostic modalities for MPE. However pleural fluid cytology is positive in only 48.5% of cases in the first sample but the yield increases with repeated analysis or other more invasive investigations like blind pleural biopsy/thoracoscopy. In cases with negative pleural fluid cytology, a biochemical marker known as Cancer ratio i.e serum LDH and pleural fluid ADA can be useful in predicting malignant causes. A cancer ratio cutoff of more than 20 helps in guiding the physician for further workups like FDG PET or tumor markers in evaluating malignancies. With this background our study aimed at the usefulness of cancer ratio in patients with exudative pleural effusion.
Materials and Methods: It's a cross sectional observational study done for a period of 18months.100 adult patients with exudative pleural effusions were recruited into the study. Those who didn’t give consent, hemodynamically unstable, whose diagnosis is known were excluded. Serum LDH, pleural fluid ADA were done in all cases and the cancer ratio is validated for diagnosis of malignant effusions.
 Results:The mean age of patients was 55.48±9.32 years. There were 57 malignant and 43 nonmalignant cases. Bronchogenic carcinoma was the leading cause of MPE and tuberculosis was the commonest cause of non-malignant pleural effusions. Mean serum LDH, Pleural fluid ADA, and cancer ratio in malignant cases and nonmalignant cases was 434.54 and 350.04IU/ml,19.05 and 32.97IU/ml and 25.13, 20.45 respectively. The sensitivity of cancer ratio was 70.17%, specificity was 76.74%, Positive predictive value was 80% and Negative predictive value was 66.6%.
Conclusion: Cancer ratio is an easy and valid diagnostic tool in suspecting malignant pleural effusions with good sensitivity and specificity
کلیدواژه‌ها
Cancer Ratio؛ Pleural Effusion؛ Malignancy'Exudates
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