RT Journal Article SR Electronic T1 Permanent IVC filter strut penetration into an abdominal aortic aneurysm JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e241962 DO 10.1136/bcr-2021-241962 VO 14 IS 6 A1 Lee, Juehea A1 Roche-Nagle, Graham YR 2021 UL http://casereports.bmj.com/content/14/6/e241962.abstract AB An 85-year-old man with a known history of abdominal aortic aneurysm (AAA) presented to a vascular surgery clinic with a severely swollen, tender and erythematous left leg. An urgent CT angiogram demonstrated a left-sided, proximal deep vein thrombosis, and a permanent, Bird’s Nest inferior vena cava (IVC) filter (Cook, Inc., Bloomington, Ind.) penetrating his AAA. The patient was treated with a course of apixaban 5 mg two times per day and the decision was made to closely observe his IVC filter and AAA, given his numerous comorbidities and age. This case highlights the unique considerations associated with an approach to permanent IVC filter complications among patients with AAAs.