A case report of a geriatric patient with multiple-site hemorrhage due to extraosseous Ewing sarcoma

Extraosseous Ewing sarcoma (EES) is a rare subtype of the undifferentiated small round cell sarcoma of bone and soft tissue. Its clinical presentation is non-specific, often manifesting initially as a local mass, pain, or systemic symptoms, such as fever and fatigue. When multisite hemorrhage serves as the initial or predominant manifestation, it is highly prone to confusion with other hemorrhagic disorders, leading to diagnostic delays. This article analyzes the diagnostic and therapeutic course of a 70-year-old patient with EES who presented with multisite hemorrhage. This report summarizes the pathogenesis, pathological characteristics, and recent advances in the treatment of EES, thereby providing a reference for timely and effective interventions.