Thoracic Cancer
Delayed Occurrence of Lung Cancer Leptomeningeal Metastasis and Era‐Associated Post‐ LM Survival: A 14‐Year Single‐Center Cohort Study
ABSTRACT Introduction Leptomeningeal metastasis (LM) is a devastating complication of lung cancer. We investigated the clinical and molecular evolution of LM in the modern targeted‐therapy era and factors associated with post‐LM survival. Methods We retrospectively analyzed 201 patients with cytologically confirmed lung cancer LM diagnosed between November 2012 and May 2026. Patients were classified by LM diagnosis date (2012–2016 vs. 2017–2026). Intervals from lung cancer and Stage IV diagnosis to LM were compared …