NEJM This Week — October 8, 2026

This week, we feature new research on transcatheter treatment for tricuspid regurgitation, multicancer early-detection testing, resuscitation strategies for septic shock, and an experimental approach to restoring vision. We review advances in breast cancer treatment, follow a puzzling case of prolonged fever and lymphadenopathy, and report on scientific reproducibility. Perspectives discuss outbreak response, obesity trials, and the enduring value of the medical generalist.