title: Bird's nest filter causing symptomatic hydronephrosis following transmural penetration of the inferior vena cava.
abstract: We report a case of symptomatic hydronephrosis caused by transcaval penetration of a Bird's Nest filter. Perforation of the wall of the inferior vena cava (IVC) following insertion of a caval filter is a well-recognized complication. Whilst two cases of hydronephrosis have been described with Greenfield filters, no case involving a Bird's Nest filter has been reported previously.
authors.affiliation: Department of Radiology, Nottingham City Hospital, Hucknall Road, Nottingham NG7 2UH, UK. cheika@doctors.org.uk
authors.forename: C S
authors.initials: CS
authors.lastname: Stacey
authors.forename: A R
authors.initials: AR
authors.lastname: Manhire
authors.forename: D H
authors.initials: DH
authors.lastname: Rose
authors.forename: M C
authors.initials: MC
authors.lastname: Bishop
mesh_terms: D000328:Adult; D004868:Equipment Failure; D005548:Foreign-Body Migration / Q000150:complications / Q000000981:diagnostic imaging; D006801:Humans; D006869:Hydronephrosis / Q000000981:diagnostic imaging / Q000209:etiology*; D007084:Iliac Vein / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D007682:Kidney Pelvis / Q000000981:diagnostic imaging / Q000473:pathology; D008297:Male; D014057:Tomography, X-Ray Computed; D014513:Ureter / Q000000981:diagnostic imaging / Q000473:pathology; D014567:Urography; D016306:Vena Cava Filters / Q000009:adverse effects*; D014682:Vena Cava, Inferior / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery*; D020246:Venous Thrombosis / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery