Abstract
Primary Site. Carcinomas of the lung arise either from the alveolar lining cells of the pulmonary parenchyma or from the mucosa of the tracheobronchial tree. The trachea, which lies in the middle mediastinum, divides into the right and left main bronchi, which extend into the right and left lungs, respectively. The bronchi then subdivide into the lobar bronchi in the upper, middle, and lower lobes on the right and the upper and lower lobes on the left (Figure 25.1). The lungs are encased in membranes called the visceral pleura. The inside of the chest cavity is lined by a similar membrane called the parietal pleura. The potential space between these two membranes is the pleural space. The mediastinum contains structures in between the lungs, including the heart, thymus, great vessels, lymph nodes, and esophagus.
(Carcinoid tumors are included. Sarcomas and other rare tumors are not included)
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© 2012 American Joint Committee on Cancer
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Compton, C.C., Byrd, D.R., Garcia-Aguilar, J., Kurtzman, S.H., Olawaiye, A., Washington, M.K. (2012). Lung. In: Compton, C., Byrd, D., Garcia-Aguilar, J., Kurtzman, S., Olawaiye, A., Washington, M. (eds) AJCC Cancer Staging Atlas. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-2080-4_25
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DOI: https://doi.org/10.1007/978-1-4614-2080-4_25
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