Six Myths about Lung Cancer Screening: What You Need to Know

Lung Cancer Screening Decision Tool

Low-dose CT screening for lung cancer can detect the disease early, when it is still curable.

This story was originally published in January of 2017.

Since the 1950s experts have known about the link between smoking and lung cancer, but for decades, there was no reliable and safe way to screen those who were at highest risk of developing the disease.

Getting screened could be a breath of fresh air.
See if you are eligible for a lung cancer screening with a two-minute quiz.
Take the Quiz

That all changed in 2011, when the results of the government-sponsored multicenter National Lung Screening Trial (NLST) were published in the New England Journal of Medicine (NEJM) showing that for current and former smokers at highest risk of developing the disease, the use of low-dose CT screening was associated with a reduction in lung cancer-related death by 20%.

Based on those findings, Memorial Sloan Kettering — like several other hospitals — launched a lung cancer screening program. Yet many of the people who would benefit most from screening are still not getting it.

Bernard Park and Michelle Ginsberg, who together lead MSK’s screening program, hope to change that. We spoke with Dr. Park, a thoracic surgeon, and Dr. Ginsberg, a radiologist, about some of the myths and misconceptions surrounding lung cancer screening, and about what individuals who smoke or used to smoke should know about getting screened.

Myth: If I quit smoking, I am no longer at risk and don’t need to undergo lung cancer screening.

Based on the research, screening is recommended not only for current smokers but also for former smokers who have quit smoking less than 15 years ago, depending on the extent of their tobacco exposure.

More specifically, screening is recommended for people who are between the ages of 50 and 80 and have smoked the equivalent of 20 or more “pack-years.” The pack-years figure is calculated by multiplying the number of years smoked by the number of packs smoked per day. For example, one pack a day for 30 years equals 30 pack years, while two packs a day for 20 years equals 40 pack years.

Back to top

Myth: Lung cancer screening is still considered experimental and is not part of standard care.

After the NEJM study, screening experts realized that the test was beneficial for the high-risk study population of people who currently and formerly smoked. Lung cancer screening is recommended for these patients and is covered by Medicare and Medicaid, as well as by most insurance companies.

Although the NLST study only screened people three times over two years, MSK experts recommend that people undergo annual low-dose CT scans for as long as they meet the screening requirements.

Back to top

Myth: Lung cancer screening has a high rate of false positives, leading to many unnecessary procedures.

“All cancer screenings carry some risk of false positives, but it is true that the rate is slightly higher for lung cancer screening,” Dr. Ginsberg says. Usually, a false positive means there was something found on the scan that requires you to undergo additional imaging scans. It doesn’t mean you’ll necessarily have to undergo other, more invasive procedures, she notes.

Dr. Park adds that the chance that someone will undergo a surgical intervention such as a biopsy for something that is not cancer is less than 5%.

Back to top

Myth: The scans used in lung cancer screening expose you to dangerous radiation.

The low-dose CT scans that are used for lung cancer screening have about five times less radiation than conventional CT scans. For the average person, even a regular CT scan is associated with a very small risk of possibly developing a future cancer — perhaps about 0.05%, or about one in 2,000. For people who meet the screening requirements, that potential risk is far outweighed by the benefit, which could save your life.

Furthermore, the test does not require an IV or any injections of contrast dye. There is no preparation and you can eat normally before your scan.

Back to top

Myth: If lung cancer is found, it will be too late for effective treatment.

“The whole point of screening is to catch the cancer at its earliest stage, before there are symptoms,” Dr. Park says. “Early lung cancer is curable. People should think of this test the same way they think of getting their cholesterol checked, which is something that enables them to intervene early and prevent coronary artery disease.”

According to the International Association for the Study of Lung Cancer, the cure rate for patients diagnosed with stage IA lung cancer — the very form of early stage disease that screening was designed to detect — is more than 75% over a five-year period.

Back to top

Myth: Lung cancer screening is time consuming.

“We’re all busy, and this can feel like one more thing you have to fit into your schedule,” Dr. Park says. Undergoing the screening may require some effort, he adds, because at some centers it requires two appointments. However, at MSK, only one visit is required.

Before having the scan, you’ll first meet with a licensed independent practitioner (a nurse practitioner, doctor, or physician’s assistant) to ensure that you are eligible and without symptoms of more advanced disease, and to answer any questions and concerns. At MSK, people who qualify for screening can have the test immediately.

People should think of this test the same way they think of getting their cholesterol checked.
Bernard J. Park Thoracic surgeon

The actual screening process takes only a few minutes, Dr. Park says, and results are usually available within 24 hours.

Dr. Park says he believes that the biggest barrier to undergoing screening may be anxiety.

“People are very afraid that something will be found,” he says. “They’re anxious leading up to the test and until the moment that I tell them that everything is OK. It’s important to emphasize that the vast majority of people who undergo the screening don’t have any findings of cancer, but for those who do, this test can save their lives.”

To learn about making an appointment with MSK’s lung cancer screening program, call 646-497-9163.  MSK offers screening appointments at most locations in ManhattanNassauCommackBasking RidgeBergenMonmouthand Westchester.

Back to top


Commenting is disabled for this blog post.

I would like the get the new innovative treatment for lung cancer as I am a lung cancer survivor who had a lung surgery 7 months age, even though I am not with MSK

Dear Sayed, if you would like to make an appointment with one of our specialists regarding what treatment options may be right for you, please call our Physician Referral Service at 800-525-2225. If you are unable to come to MSK, we recommend that you follow up with your current oncologist to discuss possible next steps in your care. Thanks you for reaching out to us.

Are PET Scans more effective? I had CT for something else and 3 nodules were found,3weeks later radiologist finally called Pulmonologist and said he should do scan! So what are my chances of a good outcome. Thank you

Dear Patricia, PET scans and CT scans look for different things. CT scans show structural changes in the anatomy and PET scans show metabolic changes in the tissue, which might indicate that cells are not functioning normally. Many centers, including MSK, offer combined PET-CT scans. We recommend you discuss this with your healthcare team. If you are interested in scheduling a consultation at MSK, you can call 800-525-2225 or go to for more information on making an appointment. Thank you for your comment, and best wishes to you.

Can you just ask to be screened? Can you just call and make an appointment to be screened? Just curious. Thank you.

Dear Jes, if you meet the requirements for being “high risk,” it is possible to self-refer and make an appointment directly to be screened. You can learn more about our screening program, including the requirements for being at high-risk and the phone number to call for an appointment. here:…

Thank you for your comment, and best wishes to you.

My mother-in-law has been diagnosed with lung cancer. We are in the process of reasearching for the best doctor for her case. Do all doctors at MSK base their plan for treatment on molecular investigation and molecularly-targeted treatments? Thank you.

Dear Ana, we’re sorry to hear about your mother-in-law’s diagnosis. The majority of people who get the more extensive MSK-IMPACT gene test have advanced cancer, but we routinely test people with non-small-cell lung cancer for a smaller number of mutations that can be targeted with approved drugs. You can learn more about this approach here:

If your mother-in-law is interested in coming here for treatment or a second opinion, she can call 800-525-2225 or go to for more information on making an appointment. Thank you for your comment, and best wishes to you and your family.

After the first appointment to see if I am eligible, how long does it take to get approval for the test from my insurance company? Does it usually get approved the same day?

Dear Mahala, we recommend that you call our Patient Access Service to discuss this. They can be reached at 800-525-2225. Thank you for your comment.

How much does screening cost for a person without insurance?

Dear Ray, to learn more about our Lung Cancer Screening Program, you can call 646-888-2007. Thank you for your comment.

Does Medicare cover the cost? I think you are wrong about why people don’t seek out a scan - it comes down to cost andvliving on a fixed income as most ex-smoker are oldee.

My daughter is 53 and is three years post treatment for cervical cancer and has a ten year year smoking history I’m not sure how many packs a day she smoked. If she smoked less than three packs a day would she still be eligible for the scan?

Dear Dorothea, this is something your daughter should discuss with her doctor. It’s possible that she may be able to get screened, but that insurance will not cover it. It’s important to weigh the pros and cons of screening with the help of a healthcare professional. Thank you for your comment, and best wishes to both of you.

The screening criteria is not sufficient. I stopped smoking 30 years ago and was diagnosed with non-small cell. I was diagnosed early, by accident. I know two other women who also stopped smoking 30 years ago. However, by the time they were diagnosed it was too late. They each died within 3 months of being diagnosed

I know of three people, including myself who stopped smoking 30 years ago and now have non-small cell lung cancer. The screening needs to change its criteria