A  A  A   Print
Lung Cancer Introduction

Lung Cancer Introduction


lung carcinoma
Microscopic image of lung carcinoma.

What is lung cancer?

Lung cancer is cancer that begins in the lungs. It is the second most common cancer in both men and women, as well as the leading cause of cancer death in both men and women.  

There are two main types of lung cancer. They are non-small cell lung cancer and small cell lung cancer. A doctor called a pathologist uses a microscope to look at the cancer cells collected during your biopsy to tell which type of cancer you have. These two types of lung cancer grow and spread in different ways. Therefore, they are treated differently. Non-small cell lung cancer usually grows and spreads more slowly than small cell lung cancer. 

Non-small cell lung cancer (NSCLC)

About 85% to 90% of lung cancers are non-small cell. There are three main types of NSCLC. While there are slight differences between them, they tend to have a similar prognosis (outlook) and are generally treated the same way:

  • Adenocarcinoma. This is the most common kind of non-small cell lung cancer. And it's the most common type of lung cancer in nonsmokers. It tends to grow in the outer edges of your lungs, and usually grows more slowly than other types of lung cancer. 

  • Squamous cell carcinoma (epidermoid carcinoma). This type of non-small cell lung cancer develops more often in smokers. These cancers tend to start in the middle part of the lungs.

  • Large cell. This is the least common of the three kinds of non-small cell lung cancer. It tends to grow and spread early to other organs, which can make it harder to treat.

Small cell lung cancer (SCLC)

Only about 10% to 15% of people diagnosed with lung cancer have small cell lung cancer. Small cell lung cancer is also called oat cell cancer. It grows and spreads more quickly than non-small cell lung cancer. It often spreads to other parts of the body at an early stage. This type of cancer is almost always associated with smokers. If you don't smoke, you aren't likely to get small cell lung cancer.

Related Items

The third-party content provided in the Health Library of phoebeputney.com is for informational purposes only and is not designed to diagnose or treat a health problem or disease, or replace the professional medical advice you receive from your physician. If you or your child has or suspect you may have a health problem, please consult your primary care physician. If you or your child may have a medical emergency, call your doctor or 911 or other emergency health care provider immediately in the United States or the appropriate health agency of your country. For more information regarding site usage, please visit: Privacy Information, Terms of Use or Disclaimer.

Follow us online:

© 2014 Phoebe Putney Health System  |  417 Third Avenue, Albany, Georgia 31701  |  Telephone 877.312.1167

Phoebe Putney Health System is a network of hospitals, family medicine clinics, rehab facilities, auxiliary services, and medical education training facilities. Founded in 1911,
Phoebe Putney Memorial Hospital (the flagship hospital) is one of Georgia's largest comprehensive regional medical centers. From the beginning, Phoebe's mission and vision
has been to bring the finest medical talent and technology to the citizens of Southwest Georgia, and to serve all citizens of the community regardless of ability to pay.