{Reference Type}: Case Reports {Title}: Aggressive undifferentiated small round cell sarcoma of the thorax showing TOP2B::UBA3 fusion. {Author}: Nakamura H;Kukita Y;Yoshida KI;Takenaka S;Yagi T; {Journal}: Histopathology {Volume}: 84 {Issue}: 7 {Year}: 2024 Jun 26 {Factor}: 7.778 {DOI}: 10.1111/his.15163