Dysbetalipoproteinemia

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Overview

Classification

Historical perspective

Pathophysiology

Causes

Differential Diagnoses

Epidemiology and Demographics

Screening

Natural History, Complication, Prognosis

Complications

  • Heart attack
  • Stroke
  • Peripheral vascular disease
  • Intermittent claudication
  • Gangrene of the lower extremities

Prognosis

  • Patients with dysbetalipoproteinemia have an increased risk for coronary artery disease and peripheral vascular disease.
  • With treatment, most people show a significant reduction in lipid levels.

Diagnosis

Diagnosis of dysbetalipoprotenemia is confirmed[1] by the

  • Presence of a palmar crease xanthoma, which is a rare diagnostic finding of dysbetalipoproteinemia.
  • Lipid profile
  • Genotyping apoE
  • Ultracentrifugation or nuclear magnetic resonance lipid profiling

History and Symptoms

Physical Exam

Laboratory Findings

Molecular Genetic Testing

Treatment

Prevention

  • Screening the family members of those with familial dysbetalipoproteinemia may lead to early detection and treatment.
  • Early treatment and avoiding other risk factors for vascular disease (such as smoking) are crucial to preventing early heart attacks, strokes, and blocked blood vessels.

References

  1. Rothschild M, Duhon G, Riaz R, Jetty V, Goldenberg N, Glueck CJ; et al. (2016). "Pathognomonic Palmar Crease Xanthomas of Apolipoprotein E2 Homozygosity-Familial Dysbetalipoproteinemia". JAMA Dermatol. doi:10.1001/jamadermatol.2016.2223. PMID 27603268.

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