Perry J N, Wells I P
Department of Radiology, Derriford Hospital, Plymouth.
Clin Radiol. 1994 Jun;49(6):431-2. doi: 10.1016/s0009-9260(05)81835-5.
At routine follow-up 13 months after its insertion, a Bird's nest inferior vena caval filter was found to be broken. The radiological findings are presented. This is the first reported case of structural failure in this sort of filter.