Normal Components

  • Yener S. Erozan
  • Ibrahim Ramzy
Part of the Essentials in Cytopathology book series (EICP, volume 6)

Epithelial Elements

Tracheal and Bronchial Respiratory Epithelium

Normal bronchial respiratory epithelium usually appears as monolayer tissue fragments and strips in bronchoscopic brush, lavage, aspirate, or transbronchial/tracheal fine needle aspirations. Epithelial cells have a uniform, honeycomb appearance en face, and columnar shape with basally located round uniform nuclei, terminal plates and cilia from profile (Fig.  2.1A, B & C). Rare goblet cells (Fig.  2.2) and reserve cells (Fig.  2.3) can be present; they are more frequently found in reactive conditions (see Chapter 3).


Idiopathic Pulmonary Fibrosis Small Cell Carcinoma Prussian Blue Multinucleated Giant Cell Hypersensitivity Pneumonitis 
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Suggested Reading

  1. Antonakopoulos GN, Lambrinaki E, Kyrkou KA. Curschmann's spirals in sputum: histochemical evidence of bronchial gland ductal origin. Diagn Cytopathol 1987;3:291–294PubMedCrossRefGoogle Scholar
  2. Chen KTK. Psammoma bodies in fine-needle aspiration cytology of papillary adenocarcinoma of the lung. Diagn Cytopathol 1990;6:235–242CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Johns Hopkins School of MedicineBaltimoreUSA
  2. 2.University of IrvineUSA

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