non-small cell lung cancersolid tumorssmall cell lung cancerbreast cancerleptomeningeal metastasespemetrexedGuangzhou Medical UniversityIntrathecal PD-1 inhibitorAffiliated Huizhou Hospitalinvolved-field radiotherapy+1 more
…ed.Results From 6/2024 to 3/2025, 31 patients were enrolled (26 non-small cell lung cancer, 4 breast cancer, and 1 small cell lung cancer). At the initial…