Abstract / Summary
Abstract Background Venous thromboembolism (VTE) is a prevalent cardiovascular disorder associated with high morbidity and mortality. Duplicated inferior vena cava (DIVC) represents an extremely rare congenital venous malformation, and concurrent symptomatic deep vein thrombosis (DVT) is rarely documented in clinical practice. Case presentation A 51-year-old male patient with a medical history of bilateral total hip arthroplasty and left femoral fracture internal fixation presented with acute left iliofemoral deep vein thrombosis. Misrecognition of the DIVC anatomical variant resulted in malposition of the inferior vena cava filter (IVCF). Interventions We performed retrieval of the misplaced filter, suprarenal IVCF implantation, percutaneous mechanical thrombectomy (PMT) and catheter-directed thrombolysis (CDT). The retrievable filter was safely removed three weeks after the end of thrombolytic therapy. Conclusion This case illustrates common diagnostic pitfalls when identifying inferior vena cava anatomical variants. We summarize practical technical strategies for IVCF deployment in patients with DIVC combined with iliofemoral DVT to guide clinical interventional practice.