title: Late stent migration into the right ventricle in a patient with nutcracker syndrome.
abstract: BACKGROUND
  Stent migration into the right ventricle is rare in patients treated with endovenous stenting, but can have potentially serious complications including endocarditis, cardiac arrhythmias, and heart failure.
  
  
  METHODS
  We present a case of stent migration into the right ventricle 5 months after stent placement in a patient with nutcracker syndrome.
  
  
  RESULTS
  Echocardiography revealed a stent caught within the subvalvular chordal structures, with significant tricuspid regurgitation. Subsequent severe damage to the tricuspid apparatus necessitated prosthetic valve replacement, as tricuspid valvuloplasty failed after stent removal.
  
  
  CONCLUSIONS
  Because stent migration is a potential complication in left renal vein stenting that can occur up to 5 months after intervention therapy, follow-up using ultrasonography is necessary. In addition, knowing the precise location of the stent, which is important for subsequent treatment, is essential when transabdominal ultrasonography reveals the absence of the stent in the left renal vein.
authors.affiliation: Echocardiography and Vascular Ultrasound Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Echocardiography and Vascular Ultrasound Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Mou
authors.affiliation: Echocardiography and Vascular Ultrasound Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Cheng
authors.affiliation: Echocardiography and Vascular Ultrasound Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
authors.forename: Hongxia
authors.initials: H
authors.lastname: Wang
authors.affiliation: Echocardiography and Vascular Ultrasound Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China. Electronic address: zhze2002@163.com.
authors.forename: Zhelan
authors.initials: Z
authors.lastname: Zheng
mesh_terms: D006348:Cardiac Surgical Procedures / Q000379:methods*; D020878:Device Removal / Q000379:methods; D004452:Echocardiography; D005548:Foreign-Body Migration / Q000175:diagnosis* / Q000601:surgery; D006352:Heart Ventricles; D006801:Humans; D008297:Male; D059228:Renal Nutcracker Syndrome / Q000175:diagnosis / Q000601:surgery*; D015607:Stents / Q000009:adverse effects*; D013577:Syndrome; D055815:Young Adult