Can cytology reliably subtype non-small cell lung carcinomas?

Area of Science:

• Oncology
• Cytopathology

Background:

• Cytology specimens are vital for lung cancer diagnosis and predictive testing.
• Accurate subtyping of non-small cell lung cancer (NSCLC) is essential for personalized cancer therapy.

Purpose of the Study:

• To review current concepts, advances, and challenges in subtyping NSCLC using cytology specimens.
• To highlight the importance of accurate morphological and immunocytochemical analysis in NSCLC subtyping.

Main Methods:

• Review of existing literature on NSCLC subtyping in cytology.
• Discussion of diagnostic techniques including morphology, immunocytochemistry, and different specimen types (FNA, exfoliative, cell block).

Main Results:

• Cytology specimens, including fine needle aspiration (FNA), exfoliative cytology, and cell blocks, are reliable for NSCLC diagnosis and subtyping.
• Immunocytochemistry enhances diagnostic accuracy when morphology alone is insufficient, particularly in non-cell block preparations.

Conclusions:

• Subtyping NSCLC in cytology is critical for guiding personalized treatment strategies.
• While morphology is informative, immunocytochemistry is often necessary for definitive subtyping, especially in challenging cases.