Diagnostic yield of pleural fluid cell block and fluid cytology in malignant pleural effusion:Study of 200 cases in tertiary care
Journal Title: Medpulse International Journal of Medicine - Year 2019, Vol 10, Issue 3
Abstract
Background: malignant pleural effusion missed routinely because of less diagnostic yield of conventional fluid cytology. Materials and Methods:The study included 200 cases of unexplained, exudative pleural effusion with ADA ≤30/IU/liter and pleural fluid cytology is either positive for malignant cell with or without cell type differentiation, or cytology suspicious for malignant cell. All cases were subjected to cell block preparation. Statistical analysiswas done by using chi-test.Observation and analysis:In study of 200 cases, mean age of group was 68±9.5 years and adenocarcinoma was predominant malignancy in 72% cases, mesothelioma in 10% cases, squamous cell carcinoma in 7% cases and 9% cases were having primary tumor outside the thoracic cavity. In study cases pleural fluid cytology was positive in 42% cases (84/200) and pleural fluid cell block was positive in 96% cases (192/200) in detecting malignant pleural effusion (p<0.0001). Remaining six and two cases were diagnosed by using image guided and thoracoscopy guided pleural biopsies respectively. IHC was done in all pleural fluid cell block preparation for calretinin, cytokeratin and EGFR.Conclusion:Pleural fluid cell block is sensitive, superior, cost effective and specific diagnostic method over conventional pleural fluid cytology. 'Cell block' specimens are enough for primary diagnosis and IHC analysis necessary for cell typing. It will decrease need for more invasive and costlier diagnostic methods like thoracoscopy and image guided pleural biopsies. We recommend cell block for every exudative pleural fluid samples with ADA<30 IU/liter.
Authors and Affiliations
Abdul Hameed Abdul Shikur Chaudhari, Shital Patil
Keywords
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