A solitary pulmonary nodule is a single abnormal spot seen in the lung, usually identified on a chest X-ray or CT scan. Some nodules are caused by old infections or benign inflammation, while others need more careful attention because of their appearance or associated risk factors.
The goal of pulmonary evaluation is to determine how concerning the nodule may be and whether additional workup is needed. Careful follow-up is important because early evaluation can make a significant difference when a nodule requires further investigation.