You Have a Lung Nodule. Is It Cancer?

If you have been diagnosed with a lung nodule, it can be frightening. But the good news is that they are usually not cancerous. A range of factors, including the size and shape of the nodule, will dictate what happens next.

Lung nodules are often discovered during CT scans examining the chest. Such was the case with Pope Leo XIV, who was undergoing a recent routine health screening when a nodule was detected in his right lung.

What Is a Lung Nodule?

Lung nodules are sometimes referred to as a “spot on the lung,” reflecting how they show up on a CT scan, which uses a series of X-rays to create detailed images of the lung.

Nodules can appear solid, semi-solid or hazy, which is often described as having ground glass appearance. Nodules are generally round or oval shaped and measure 3 centimeters or less in diameter. Anything larger would be classified as a mass.

The reassuring news is that the vast majority – 90 percent or more – of nodules are benign, or non-cancerous. Benign nodules develop for several reasons, including inflammatory and auto immune disorders, scar tissue, a past infection or something from the air that has irritated your lungs.

Whatever the cause, if you have a lung nodule, it is highly unlikely that you will know it – unless it is detected on a scan. Most nodules have no symptoms.

Is a Lung Nodule Cancer? (Key Risk Factors)

Although most nodules are benign, some represent early lung cancer. So if a nodule is detected, determining which nodules require further investigation is an important part of the evaluation process used to determine what should happen next.

Your medical team will examine various characteristics of the nodule, as well as your own health history. Among the factors that will be explored:

• Your age: Cancer risk generally increases as you age.
• Smoking history. Both current and former smokers have a higher risk. Although people who have never smoked can develop lung cancer as well.
• Cancer history or family history: A previous cancer diagnosis increases your risk.
• Nodule size: Larger nodules generally represent greater risk.
• Nodule shape: Nodules with spiked irregular borders are more troubling.
• Nodule density: Solid, semi-solid or ground glass densities have different risk profiles. Solid nodules are more likely to be cancerous.
• Location: Nodules located in the upper lung lobes are considered riskier.
• Growth over time: Nodules enlarging over time or becoming more solid warrant further evaluation.

When all these factors are taken into consideration, your doctor will be able to estimate the likelihood that the nodule is either benign or malignant (cancerous).

For small or low risk nodules, your doctor may suggest watching the nodule over time with a repeat CT scan after a specified time to monitor for nodule changes. But more suspicious nodules with higher risk of cancer may require additional tests such as PET scans, a biopsy to test tissue from the nodule or surgical removal.

In Pope Leo’s case, additional testing revealed the presence of cancer. Doctors then removed the lower lobe of his right lung with minimally invasive surgical techniques.

Who Should Get Screened for Lung Cancer?

One of the biggest challenges in fighting lung cancer is the way the disease lurks silently in the lungs during its earlier, more treatable stages. Obvious symptoms only begin to appear after the cancer spreads. Detecting it early can significantly improve treatment options and outcomes in the leading cause of U.S. cancer deaths.

The U.S. Preventive Services Task Force develops screening guidelines for various cancers, including lung, breast and colon cancer – in hopes of catching more cancers early. Unfortunately, many of the people who should be getting screened for lung cancer aren’t taking advantage of this critical tool for early detection.

Current recommendations by the task force for an annual screening by CT scan are for adults who meet these three criteria:

• 50 to 80 years old.
• Currently smoking or quit smoking in the past 15 years.
• Have at least a 20 pack-year smoking history. A pack year is smoking an average of one pack of cigarettes each day for a year. So, if you smoked a pack a day, you would hit the screening trigger after 20 years. But if you smoked two packs a day, it would take only 10 years to hit the threshold.

Early Detection Can Make a Difference

If you qualify for lung cancer screening, take the time for these quick and painless annual screenings. Catching a potential tumor early can mean a significant difference in the success of your treatment options.

A dedicated multidisciplinary lung nodule program brings together specialists in pulmonology, radiology, thoracic surgery and oncology to ensure that suspicious nodules are evaluated promptly, while avoiding unnecessary procedures for nodules that are unlikely to be cancerous.

This content is not AI generated.