A member asked:

Why would a lung nodule grow from 5mm to 9mm?

5 doctors weighed in across 2 answers

Would get checked: A lung nodule is not cancer per se, but it is unusual for a noncancerous nodule to grow. In the setting of smoking, this would be worrisome and require further evaluation.

Answered 9/7/2017

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Dr. Barry Sheppard answered

Specializes in Thoracic Surgery

Tumor or infection: A nodule that is increasing in size is concerning for cancer. Certain infections (TB or fungal) can appear as enlarging nodules as well. The rate of increase in size can help to determine the likelihood of a cancer. The age and history of tobacco use of the patient also play into the likelihood that an enlarging nodule is cancer or infection. An enlarging nodule should be investigated.

Answered 1/14/2021

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