Intrathecal therapy may help some lung cancer patients with brain lining spread

This review looked at intrathecal therapy, a treatment delivered into the spinal fluid, for adults with non-small cell lung cancer that has spread to the brain lining. The review included ten original studies, mostly retrospective and from single centers. The main finding was that intrathecal therapy was associated with neurological improvement and clearance of cancer cells from the spinal fluid in a substantial proportion of patients. Survival outcomes were modest with older drugs like methotrexate or cytarabine, but appeared longer with pemetrexed and molecularly guided regimens in selected groups. Safety concerns included device-related complications such as infection or catheter malfunction. The main reason to be careful is that the evidence comes from limited, retrospective studies, and randomized comparative data are lacking. Readers should understand that this therapy may be an option for some patients as part of a broader treatment plan, but more research is needed to refine patient selection and delivery methods.