Journal
CYTOPATHOLOGY
Volume 33, Issue 1, Pages 8-13Publisher
WILEY
DOI: 10.1111/cyt.13056
Keywords
adenocarcinoma; cytology; non-small cell lung cancer; non-small cell lung carcinomas; squamous cell carcinoma; subtyping
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Cytology specimens are crucial for the diagnosis and subtyping of lung cancer, especially adenocarcinoma and squamous cell carcinoma. While cytology with or without immunocytochemistry is reliable for accurate diagnosis, subtyping NSCLC based solely on morphology can be challenging in certain cases.
Cytology specimens play an important role in the diagnosis and predictive testing of lung cancer. While morphological characterisation of small cell and non-small cell lung carcinomas (NSCLC) on cytology is possible, further subtyping of NSCLC into adenocarcinoma and squamous cell carcinoma morphology is also mandatory in the current era of personalised medicine. Notably, cytology specimens in different forms (fine needle aspiration, exfoliative, and cell block) with or without immunocytochemistry are reliable sources for accurate diagnosis of adenocarcinoma and squamous cell carcinoma as evidenced by numerous studies present in the literature. However, there are instances where subtyping of NSCLC based on morphology alone is challenging on cytology samples, especially non-cell block preparations. In this paper, we will discuss current concepts, advances, and challenges of subtyping NSCLC in cytology specimens.
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