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Background
The World Health Organization incorporates morphologic features with prognostic significance in the 2021 classification of epithelioid diffuse pleural mesothelioma (E‐DPM). Although cytology specimens are often the first and occasionally the only specimen available for patients with DPM, these features have not yet been investigated in cytology.
Methods
Nuclear atypia, pleomorphic features,...
Introduction
Although alterations in SMARCA4‐deficient occur in non–small cell lung carcinoma (SD‐NSCLC), thoracic SMARCA4‐deficient undifferentiated tumor (TSDUT) is recognized as a distinct entity in the 2021 World Health Organization Classification of Thoracic Tumors because of unique morphologic, immunophenotypic and molecular features, and worse survival compared with SD‐NSCLC. Cytologic diagnosis...