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Familial risks of unusual forms of venous thrombosis: a nationwide epidemiological study in Sweden.

På svenska

Author

Summary, in English

Zöller B, Li X, Sundquist J, Sundquist K. (Center for Primary Health Care Research, Lund University, Malmö, Sweden; Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA, USA). Familial risks of unusual forms of venous thrombosis: a nationwide epidemiological study in Sweden. J Intern Med 2010; doi: 10.1111/j.1365-2796.2010.02326.x. ABSTRACT.: Objective. This is the first nationwide study to determine familial risks of unusual forms of venous thrombosis amongst offspring of affected parents and amongst siblings. Design and settings. The Swedish Multigeneration Register of 0- to 75-year-old subjects was linked to the Hospital Discharge Register for the period 1987-2007. Standardized incidence ratios (SIRs) were calculated for individuals whose relatives were hospitalized for venous thromboembolism (VTE), as determined by the International Classification of Diseases, compared to those whose relatives were not affected by VTE. Results. The total number of hospitalized patients with VTE was 45 362, of which 1824 (4.0%) were affected by a rare thrombotic condition. The familial SIRs in cases with a history of VTE in parents or siblings were significantly increased for migrating thrombophlebitis (1.81; 95% confidence interval (CI) 1.40-2.31), portal vein thrombosis (2.35; 95% CI 1.77-3.06), vena cava thrombosis (1.96; 95% CI 1.42-2.64) and cerebral venous thrombosis (1.74; 95% CI 1.30-2.28). Budd-Chiari syndrome (SIR, 0.92; 95% CI 0.24-2.38) and renal vein thrombosis (SIR, 1.72; 95% CI 0.62-3.77) were not significantly associated with parental or sibling history of VTE; however, these two conditions were very rare, and therefore, we cannot draw any definite conclusions from this finding. Conclusions. Family history is an important risk factor for most unusual forms of VTE. Moreover, even the paraneoplastic phenomenon, migrating thrombophlebitis (Trousseau's syndrome), is associated with a family history of VTE. Thus, our data suggest that most rare forms of VTE have a familial background.

Publishing year

2011

Language

English

Pages

158-165

Publication/Series

Journal of Internal Medicine

Volume

270

Document type

Journal article

Publisher

Wiley-Blackwell

Topic

  • Cardiac and Cardiovascular Systems
  • Public Health, Global Health, Social Medicine and Epidemiology

Status

Published

Research group

  • Family Medicine and Community Medicine

ISBN/ISSN/Other

  • ISSN: 1365-2796