Why the study?
Complications can rarely occur during initial inferior vena cava filter placement, highlighting the need to understand management and retrieval of inadvertently misplaced noncaval filters.
Highlights the critical importance of routine and careful placement techniques for inferior vena cava filters to avoid inadvertent noncaval deployment.
Inadvertent azygous/renal vein IVC filter placements require complex retrieval; Level 5 cases leave open standardized imaging protocols to prevent malposition.
Inferior vena cava filters are placed to prevent life-threatening pulmonary embolism in a selected group of patients. Significant complications are known to occur with prolonged dwell times, and rarely during initial placement. In this report, we describe two cases of inadvertent noncaval inferior vena cava filter placements, specifically in the azygous vein and right renal vein, and the complex methods used to retrieve them, which exemplify the critical importance of routine and careful placement techniques.
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Jaber et al. (2019) studied this question.
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