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Polyclonal hyperviscosity syndrome

Disease definition

A rare hematologic disease characterized by high serum viscosity due to polyclonal expansion of immunoglobulins, most commonly in the context of Waldenström's macroglobulinemia, as well as a variety of disorders of immune dysregulation. Patients present with signs and symptoms involving multiple organs, such as bleeding diathesis, mucosal bleeding, retinal hemorrhage, headache, stroke, pulmonary hypertension, and congestive heart failure.

ORPHA:450322

Classification level: Disorder
  • Synonym(s): -
  • Prevalence: Unknown
  • Inheritance: Not applicable 
  • Age of onset: Adolescent, Adult, Elderly, All ages
  • ICD-10: D89.0
  • OMIM: -
  • UMLS: -
  • MeSH: -
  • GARD: -
  • MedDRA: -
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