Gunter OL, Sing RF, Rosen MJ, Kercher KW, Heniford BT. Asymptomatic Thrombus Trapping in Vena Cava Filters: A Case Series. J Am Osteopath Assoc 2006;106(10):621–623. doi: 10.7556/jaoa.2006.106.10.621.
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The prophylactic use of vena cava filters (VCFs) remains controversial. Class I data supporting the placement of prophylactic VCFs are lacking. In addition, there are concerns regarding the long-term effects of permanent VCF placement in patients with a relatively brief period of thromboembolic risk. Venous thromboembolism can be a lethal event, occurring without a prodrome. Yet, this condition is potentially preventable. The efficacy of VCFs is difficult to determine, as it is likely that when a VCF actually traps a thrombus, the event is clinically asymptomatic. We present three cases of asymptomatic thrombus trapping in VCFs, recognized through incidental radiographic studies.
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