Recurrence After Complete Resection for Non-Small Cell Lung Cancer in the National Lung Screening Trial

Area of Science:

• Oncology
• Pulmonary Medicine
• Radiology

Background:

• Non-small cell lung cancer (NSCLC) is a leading cause of cancer death.
• Complete surgical resection is a primary treatment for early-stage NSCLC.
• Understanding recurrence patterns is crucial for improving patient outcomes.

Purpose of the Study:

• To analyze recurrence patterns, predictors, and long-term outcomes in early-stage NSCLC patients post-resection.
• To evaluate the impact of screening methods on recurrence rates.
• To assess survival after disease recurrence.

Main Methods:

• Analysis of data from the National Lung Screening Trial (NLST) cohort.
• Inclusion of patients with pathologically staged I-II NSCLC who underwent complete resection.
• Utilizing Fine-Gray competing risks regression to identify recurrence predictors.

Main Results:

• The 5-year cumulative incidence of recurrence was 20.1% among 497 patients.
• Distant recurrence occurred in 50% of cases; locoregional and distant recurrence in 31.9%.
• Lung cancer detected by low-dose CT screening showed significantly lower recurrence rates compared to other detection methods.

Conclusions:

• A 5-year recurrence incidence of 20% was observed in completely resected stage I-II NSCLC patients.
• The majority of recurrences (82%) were distant and associated with poor survival.
• Early detection via low-dose CT screening may reduce recurrence risk.