Lung cancer is the cancer that arises from the tissue of the lung. It is one of the most common cancers in humans and is a leading cause of death worldwide. Lung cancer occurrence has been increasing with smoking, which is considered the most important risk factor. In this article, we will discuss lung cancer, its symptoms, types, diagnosis, and treatment.
Types of lung cancer:
Lung cancer is divided into two main types:
- Small cell lung cancer: small cell lung cancer forms around 15% of lung cancers. It is usually the more aggressive form and spreads early on to other tissues.
- Non-small cell lung cancer (NSCLC): Non-small cell lung cancer forms the majority of lung cancer with 85%. It is usually milder than the other type and spreads later.