[Problems in the histological classification of bronchial carcinomas]
Abstract:
Different histological classifications of pulmonary tumors, proposed and adopted over the last five decades, are briefly reviewed. Referring to the revised Histological Classification of Lung Tumors that was edited by an international committee of lung pathologists for WHO in 1977, different histologic types of bronchus carcinoma are presented in separate groups. Squamous carcinoma, small cell carcinoma, adenocarcinoma, and large cell carcinoma are differentiated in supra- and subgroups. Specific problems arising in the classification of mixed or combined tumors manifesting coexistence of different histologic growth types in the same tumor, are discussed in detail.
Related Concept Videos
The Bronchial Tree
The trachea, commonly known as the windpipe, is a tube that connects the larynx (voice box) to the bronchi. At a point called the carina, it bifurcates into two primary bronchi. The right primary bronchus is wider, shorter, and more vertical than the left primary...
Anatomy of Respiratory System II: Lower Respiratory Tract
The Larynx
It is located between the pharynx and the trachea, acts as a passageway for air, and hosts several critical structures, such as the epiglottis, vocal cords, and glottis. The epiglottis acts as a gateway, guiding food to the...
Pulmonary Tuberculosis III
The first classification is based on the development of the disease, and it includes the following categories:
Asthma-II: Pathophysiology and Classification
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features


