NEJM This Week — July 17, 2025

Featuring articles on gastric and gastroesophageal junction cancer, pulmonary sarcoidosis, graft-versus-host disease, gastroenteritis in children, the rapid recovery of donor hearts after circulatory death, and an on-table reanimation of a pediatric heart from donation after circulatory death; a review article on fragile X disorders; a case report of a woman with neck swelling and dysphagia; and Perspectives on vaccine policy, on new mammography tools, and on the second life of Jacqui B.