[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.…