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Multiple primary lung carcinomas: prognosis and treatment.
T K Rosengart1, N Martini, P Ghosn
1Department of Surgery, Memorial-Sloan Kettering Cancer Center, New York, New York 10021.
The Annals of Thoracic Surgery
|October 1, 1991
Summary
Patients surviving initial lung cancer need lifelong screening for new primary lung cancers. Complete resection of these secondary cancers significantly improves survival rates.
Area of Science:
- Thoracic Surgery
- Medical Oncology
- Pulmonary Medicine
Background:
- Multiple primary lung carcinomas present a complex clinical challenge.
- Understanding the patterns and outcomes of synchronous and metachronous lung cancers is crucial for patient management.
Purpose of the Study:
- To analyze the incidence, characteristics, and survival outcomes of patients with multiple primary lung carcinomas.
- To evaluate the impact of treatment, particularly complete resection, on survival in these patients.
Main Methods:
- Retrospective analysis of 111 patients diagnosed with multiple primary lung carcinomas between 1955 and 1990.
- Classification based on histology, disease-free interval, and timing (synchronous/metachronous).
- Comparison of survival rates based on disease type, resection status, and treatment modality.
Main Results:
- Metachronous lung cancer (70%) occurred more frequently than synchronous (30%).
- Five-year survival from initial diagnosis was higher for metachronous (70%) vs. synchronous (44%) disease.
- Complete resection of second primary lung cancers significantly improved 5-year survival (38% vs. 9%).
Conclusions:
- Lifelong screening for multiple primary lung carcinomas is essential for survivors of initial lung cancer.
- Complete surgical resection of secondary primary lung cancers should be pursued whenever feasible to enhance survival.
- Favorable prognostic factors include metachronous disease, later onset, and adenocarcinoma histology.