ORIGINAL ARTICLE |
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Cytological diagnosis of malignant mesothelioma: A case series
Sakshi Dahiya, Meeta Singh, Shyama Jain, Bembem Khuraijam, Naman Suroya, Shramana Mandal
Department of Pathology, Maulana Azad Medical College, Delhi, India
Correspondence Address:
Meeta Singh, Department of Pathology, Room No-206, Pathology Block, Maulana Azad Medical College, New Delhi - 110 002 India
 Source of Support: None, Conflict of Interest: None DOI: 10.4103/joc.joc_145_21
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Background: Mesotheliomas are neoplasms of the serosal lining of the body cavities. Diagnosis requires a multimodal approach of clinical findings, cytology, and histopathology with immunohistochemistry (IHC). The published sensitivity of cytology for diagnosing mesothelioma ranges from 30% to 75%. Aim and Objectives: This study aimed to calculate the incidence of malignant mesothelioma (MM) at our institute and to study the cytological features of MM. Materials and Methods: A retrospective study of pleural, peritoneal, and pericardial fluids submitted at our institute was done. The duration of the study was 8 years (2011–2019). Apart from examining Giemsa smears, a panel of immunocytochemical (ICC) and cell block immunohistochemical (IHC) markers was applied to achieve the diagnosis. These included calretinin, mesothelin, CK5/6, Hector Battifora mesothelial cell antibody (HBME), WT1, MOC31, CK7 and CK20. Histopathological correlation was done wherever possible. Result: In the present study, we compiled four cases of MM over 8 years diagnosed on serous effusion cytology and confirmed by immunocytochemistry (ICC)/cell block immunohistochemistry (IHC)/biopsy. This indicates a rare incidence of MM. The Cytological features of MM were studied. Conclusion: The diagnosis of MM is difficult, especially cytologically. It was found to be a rare entity in the malignant cases diagnosed on effusion cytology.
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