[Clinical Picture] High-output cardiac failure from a synovial sarcoma mimicking arteriovenous fistula

A 30-year-old woman presented to the Vascular Anomalies Centre at Shanghai Ninth People's Hospital in February, 2021, for a worsening and painful left inguinal arteriovenous fistula, which had been diagnosis 7 years previously following a strain 10 years ago. Initial endovascular embolisation in 2014 provided only transient relief, with subsequent symptom recurrence, progressive deep vein thrombosis, limb oedema, and claudication. By 2018, she had developed orthopnoea indicative of cardiac failure and required continuous diuretics, having received only symptomatic care until her presentation.