Treatment of Pediatric, Adolescent, and Young Adult Patients With Fusion-Positive Alveolar Rhabdomyosarcoma Infiltrating Regional Lymph Nodes in the European CWS-2002P and RMS 2005 Studies and the Soft Tissue Sarcoma Registry - Heinz, Amadeus Tilman; Ciuffolotti, Melissa; Merks, Johannes; Schönstein, Anton; Fuchs, Jörg; Minard-Colin, Veronique; Guillén Burrieza, Gabriela; Institut Català de la Salut; Heinz AT Department of Pediatric Hematology and Oncology, University Children´s Hospital Tuebingen, Tuebingen, Germany. Stuttgart Cancer Center, Zentrum für Kinder-, Jugend- und Frauenmedizin (Olgahospital), Pädiatrie 5 (Pädiatrische Onkologie, Hämatologie, Immunologie), Klinikum der Landeshauptstadt Stuttgart, Stuttgart, Germany. Ciuffolotti M Stuttgart Cancer Center, Zentrum für Kinder-, Jugend- und Frauenmedizin (Olgahospital), Pädiatrie 2 (Pädiatrische Gastroenterologie), Klinikum der Landeshauptstadt Stuttgart, Stuttgart, Germany. Merks JHM Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands. Division of Imaging and Oncology, University Medical Center Utrecht, University of Utrecht, Utrecht, The Netherlands. Schönstein A Network Aging Research, Heidelberg University, Heidelberg, Germany. Minard-Colin V Department of Pediatric and Adolescent Oncology, Gustave Roussy, Université Paris-Saclay, Villejuif, France. Fuchs J Department of Pediatric Surgery and Urology, University Children’s Hospital, Tuebingen, Germany. Guillen G Servei de Cirurgia Pediàtrica, Vall d’Hebron Hospital Universitari, Barcelona, Spain. Universitat Autònoma de Barcelona, Bellaterra, Spain; Vall d'Hebron Barcelona Hospital Campus (Scientia, 2025)