For a small pulmonary nodule with calcification, what is the most likely malignant potential and recommended management?

• A. Less than 8 mm with calcification has low malignant potential; active surveillance.
• B. All small nodules require immediate needle biopsy.
• C. Central nodules are best managed with surgical resection.
• D. Calcified nodules always indicate cancer.

Answer: (A)

A small pulmonary nodule that has calcification is most likely benign and has very low malignant potential, especially when the nodule is under about 8 mm. Calcification patterns typical of benign lesions—central, diffuse, laminated, or popcorn calcification—often reflect healed granulomatous infection or a hamartoma, which lowers the suspicion for cancer. Because of this low risk, the appropriate approach is active surveillance with periodic CT scans to confirm the nodule remains stable rather than pursuing immediate biopsy or surgical removal. Biopsy or resection is reserved for nodules that grow, lack calcification patterns, or show other worrisome radiographic features. In short, a tiny calcified nodule usually doesn’t require invasive testing unless its features change over time.