There are two main types - small cell lung cancer (SCLC) and non-small cell lung cancer (NSCLC).

SCLC is the less common of the two, which is good, because it's also the more deadly. Less than one percent of SCLC is diagnosed in non-smokers. This means that smoking is the primary culprit behind this type of lung cancer. SCLC is aggressive and fast-moving. It rapidly metastasizes to other organs, and is often not discovered until the cancer is already widespread throughout the body.

Non-small cell lung cancer 肺癌末期症狀 accounts for approximately 80% of diagnosed lung cancer cases. Within this category, there are three main sub-categories ... squamous cell cancer, adenocarcinomas, and large cell carcinomas. Sometimes two or even all three can appear together.

Finally, there are some less common types such as bronchial carcinoids (small tumors that are most often found in people under 40 years of age). These tend to be less aggressive, grow slowly, and often can be effectively treated.