The February 2026 JAMA article covers several medical topics. One study compared stereotactic radiation with whole brain radiation avoiding the hippocampus in the treatment of 5 to 20 brain metastases. Additional research focuses on the use of the G2211 Medicare code for long-term care, comparing its use in primary and specialty care. The article also contains information about microplastics for patients. Additional topics include bioresorbable versus metallic occluder for transcatheter closure of atrial septal defect, pertussis infection in adults, and discontinuations of Medicare benefit coverage in 2026.