Benign Neoplasms

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

Benign neoplasms of lung are rare and cytologic samples are obtained usually by fine needle aspirations from mass lesions suspected of malignancy or an infectious disease, such as tuberculosis or fungal infections. The majority of the benign neoplasms have epithelial and mesenchymal components; pure benign epithelial neoplasms are extremely rare.

Pulmonary Hamartoma

Hamartomas occur more commonly in males with peak incidence in the 6th decade of life and present as well defined coin lesions in the lung and are usually correctly recognized by imaging techniques. In some instances, a suspicion of malignancy necessitates sampling by FNA. The material procured consists of epithelial cells, stromal elements and some lymphocytes (Figs. 6.1 and 6.2). The epithelial cells are bronchial type, with cilia or mucinous vacuoles, and appear singly or in sheets and strips, and have uniform nuclei. A variable amount of chondromyxoid stromal matrix and cells is seen. The myxoid component is...


Papillary Thyroid Carcinoma Malignant Fibrous Histiocytoma Solitary Fibrous Tumor Inflammatory Myofibroblastic Tumor Granular Cell Tumor 
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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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