Non-small Cell Lung Cancer (NSCLC) Types

There are three main types of non-small cell lung cancer:

1. Squamous cell lung cancer
   It's counting for 25% of lung cancers, squamous cell lung carcinoma usually starts near a central bronchus. Squamous cell lung cancers often grow more slowly than other cancer types.
2. Adenocarcinoma
   It is counts for 40% of lung cancers. Adenocarcinoma usually originates in peripheral lung tissue. Most cases of adenocarcinoma are associated with smoking; however, among people who have never smoked ("never-smokers"), adenocarcinoma is the most common form of lung cancer. A subtype of adenocarcinoma, the bronchioloalveolar carcinoma, is more common in female never-smokers, and may have different responses to treatment.
   
   
3. Large cell lung cancer
   In most series, large cell lung cancer comprise between 5% and 10% of all lung cancers. Large cell carcinoma is differentiated from small cell carcinoma primarily by the larger size of the anaplastic cells, a higher cytoplasmic-to-nuclear size ratio, and a lack of "salt-and-pepper" chromatin.

Main Article: Non-small Cell Lung Cancer