Guangzhou Medical UniversityAffiliated Huizhou Hospitalpemetrexednon-small cell lung cancersolid tumorssmall cell lung cancerIntrathecal PD-1 inhibitorbreast cancerinvolved-field radiotherapyleptomeningeal metastases+1 more
… Institutional Review Board of the Affiliated Huizhou Hospital, Guangzhou Medical University, Huizhou, China (Approval number: 2024-KY-029-01). Informed con…