The minimum volume of pleural fluid required to diagnose malignant pleural effusion: A retrospective study

Background: Pleural fluid cytology is a quick and accurate method to diagnose malignant pleural effusions. The optimal volume of fluid for cytological analysis has not yet been identified, and clinical recommendation based on some published clinical experiences has been to send large volumes of flui...

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Main Authors: Huimin Wu, Rahul Khosla, Prashant K Rohatgi, Suman S Chauhan, Edina Paal, Wen Chen
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2017-01-01
Series:Lung India
Subjects:
Online Access:http://www.lungindia.com/article.asp?issn=0970-2113;year=2017;volume=34;issue=1;spage=34;epage=37;aulast=Wu
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author Huimin Wu
Rahul Khosla
Prashant K Rohatgi
Suman S Chauhan
Edina Paal
Wen Chen
author_facet Huimin Wu
Rahul Khosla
Prashant K Rohatgi
Suman S Chauhan
Edina Paal
Wen Chen
author_sort Huimin Wu
collection DOAJ
description Background: Pleural fluid cytology is a quick and accurate method to diagnose malignant pleural effusions. The optimal volume of fluid for cytological analysis has not yet been identified, and clinical recommendation based on some published clinical experiences has been to send large volumes of fluid for cytological analysis. A quality improvement initiative at our institution was conducted to determine the volume of fluid sufficient for a diagnosis of malignant pleural effusion. Materials and Methods: The study was approved by the Institutional Review Board. All pleural fluid specimens that were divided into three volumes (25 mL, 50 mL, and 150 mL) and sent for cytological examination were reviewed. Results: A total of 74 samples from 60 individual patients were evaluable. Thirty-six patients (60%) had a previous diagnosis of malignancy. Of the 74 specimens, 26 (35.1%) were positive for malignancy. The detection rate for malignant pleural effusion by cytology for 25 mL, 50 mL, and 150 mL were 88.5%, 96.2%, and 100.0%, respectively (P = 0.16). Two specimens that were negative in the 25 mL samples turned out to be positive in the 50 mL and 150 mL samples. One specimen was negative in the 25 mL and 50 mL samples but positive in the 150 mL sample. Conclusions: Our study did not show any statistically significant difference in the detection of malignant effusion in the 25 mL, 50 mL, and 150 mL group.
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spelling doaj.art-b8ef5c8b069f418eae378d6b565d2d7f2022-12-21T22:31:08ZengWolters Kluwer Medknow PublicationsLung India0970-21130974-598X2017-01-01341343710.4103/0970-2113.197120The minimum volume of pleural fluid required to diagnose malignant pleural effusion: A retrospective studyHuimin WuRahul KhoslaPrashant K RohatgiSuman S ChauhanEdina PaalWen ChenBackground: Pleural fluid cytology is a quick and accurate method to diagnose malignant pleural effusions. The optimal volume of fluid for cytological analysis has not yet been identified, and clinical recommendation based on some published clinical experiences has been to send large volumes of fluid for cytological analysis. A quality improvement initiative at our institution was conducted to determine the volume of fluid sufficient for a diagnosis of malignant pleural effusion. Materials and Methods: The study was approved by the Institutional Review Board. All pleural fluid specimens that were divided into three volumes (25 mL, 50 mL, and 150 mL) and sent for cytological examination were reviewed. Results: A total of 74 samples from 60 individual patients were evaluable. Thirty-six patients (60%) had a previous diagnosis of malignancy. Of the 74 specimens, 26 (35.1%) were positive for malignancy. The detection rate for malignant pleural effusion by cytology for 25 mL, 50 mL, and 150 mL were 88.5%, 96.2%, and 100.0%, respectively (P = 0.16). Two specimens that were negative in the 25 mL samples turned out to be positive in the 50 mL and 150 mL samples. One specimen was negative in the 25 mL and 50 mL samples but positive in the 150 mL sample. Conclusions: Our study did not show any statistically significant difference in the detection of malignant effusion in the 25 mL, 50 mL, and 150 mL group.http://www.lungindia.com/article.asp?issn=0970-2113;year=2017;volume=34;issue=1;spage=34;epage=37;aulast=WuCytologymalignantpleural effusion
spellingShingle Huimin Wu
Rahul Khosla
Prashant K Rohatgi
Suman S Chauhan
Edina Paal
Wen Chen
The minimum volume of pleural fluid required to diagnose malignant pleural effusion: A retrospective study
Lung India
Cytology
malignant
pleural effusion
title The minimum volume of pleural fluid required to diagnose malignant pleural effusion: A retrospective study
title_full The minimum volume of pleural fluid required to diagnose malignant pleural effusion: A retrospective study
title_fullStr The minimum volume of pleural fluid required to diagnose malignant pleural effusion: A retrospective study
title_full_unstemmed The minimum volume of pleural fluid required to diagnose malignant pleural effusion: A retrospective study
title_short The minimum volume of pleural fluid required to diagnose malignant pleural effusion: A retrospective study
title_sort minimum volume of pleural fluid required to diagnose malignant pleural effusion a retrospective study
topic Cytology
malignant
pleural effusion
url http://www.lungindia.com/article.asp?issn=0970-2113;year=2017;volume=34;issue=1;spage=34;epage=37;aulast=Wu
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