Pediatric Cardiac Arrest From Tumor-Associated Pulmonary Embolism: Diagnostic Insights From Imaging After Extracorporeal Cardiopulmonary Resuscitation. - Otsuka M; Tahara N; Yoshigai M; Nishikido A; Matsushima Y; Takata Y; Yanai T; Homma T; Tanigawa M; Fukumoto Y (JACC. Case reports, 2026)