The Beth Israel Lung Nodule Center characterizes lung nodules according to specific and accepted medical guidelines.

A lung nodule is an abnormal spot or shadow on an imaging test—typically an X-ray or CT scan—that measures approximately 1.5 cm in diameter or less. Any lung spot that is larger than this is considered a lung mass, and is more likely to be malignant (cancerous) in nature.

Lung nodules are quite common. About 150,000 lung nodules are spotted in X-rays or CT scans in people in the United States every year. The majority of these nodules—about 60 percent—are benign (non-cancerous).

If more than one lung nodule is seen, the chances of a malignant condition increase. However, even multiple lung nodules—on one side or on both the right and left sides—can be benign.

To make an appointment at the Beth Israel Lung Nodule Center, please call 212.844.6699, or click here to fill out an appointment scheduling form. A staff member will get back to you within 48 hours to schedule an appointment.

You can also email your questions to

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