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Treatment of second primary tumor

Source: Non-Small Cell Lung Cancer Treatment (PDQ®)–Health Professional Version, National Cancer Institute.

Source updated: May 15, 2025 · Captured 2026-09-09.

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Context: Treatment of Newly Diagnosed Stage IV, Relapsed, and Recurrent NSCLC / Treatment Options for Newly Diagnosed Stage IV, Relapsed, and Recurrent NSCLC (First-Line Therapy) / Local therapies and special considerations

A solitary pulmonary metastasis from an initially resected bronchogenic carcinoma is unusual. The lung is frequently the site of second primary malignancies in patients with primary lung cancers. Whether the new lesion is a new primary cancer or a metastasis may be difficult to determine. Studies have indicated that in most patients the new lesion is a second primary tumor, and after its resection, some patients may achieve long-term survival. Thus, if the first primary tumor has been controlled, the second primary tumor should be resected, if possible.[112,113]

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