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When Diagnostic Imaging Reveals a Lung Nodule

September 19, 2022

At North Jersey Pulmonary Associates, we provide the skilled care required to diagnose, manage, and care for issues and conditions affecting pulmonary health and function. 

What is a lung nodule?

Defined as an area less than 3 cm in size that appears different and denser than the surrounding tissue, a lung nodule can look like a shadow or “spot on the lung” (as it’s more commonly called). Typically detected on a chest x-ray or CT scan, a lung nodule is not as rare as one may think. As a matter of fact, up to 50% of adults getting chest x-rays have them. 

Most lung nodules are benign.

Although it sounds like a frightening finding, a lung nodule doesn't always represent a cancerous lesion. The Journal of the American Medical Association states that close to 95% of lung nodules are benign.

Some reasons for a non-cancerous and non-malignant solitary lung nodule include:

  • A residual scar from tuberculosis or a previous fungal, bacterial, or parasitic infection
  • An active infection
  • Cysts
  • Pulmonary blood vessel abnormalities
  • Arthritis
  • Sarcoidosis
  • Impacted mucus or contained fluid pocket
  • Multiple pulmonary nodules due to prolonged environmental exposure to coal or mineral dust or a bacteria-containing blood clot
  • A benign lung tumor

The causes and risks for cancerous pulmonary nodules

The chances that a single pulmonary nodule or multiple ones reflect the presence of cancer are greater for ones with a more solid appearance, are larger in size, have irregular borders, or located in the lung’s upper lobe. Risk factors for a cancerous nodule may include smoking, previous cancers, emphysema, age, and family lung cancer history, asbestos, or radon exposure. 

Providing the skilled and experienced care required

Most individuals with a lung nodule remain completely unaware they have one. It's often only when the growth encroaches on the airway, or one experiences cancer-related symptoms that leads one to think something's amiss.

In all cases of lung nodules, the professional team at North Jersey Pulmonary Associates develops a thorough and individualized diagnostic plan. We carefully consider a person’s medical history, the size and location of the lesion, and all contributing risk factors for further diagnostic testing, monitoring when indicated, management, and treatment.