Hypereosinophilic syndrome: Difference between revisions

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== Definition ==
== Background ==


* Idiopathic eosinophilia persisting for more than 6 months without identifiable cause
*Idiopathic eosinophilia persisting for more than 6 months without identifiable cause


===Pathophysiology===
== Differential Diagnosis ==


*Mutation in PDGFRA and FIP1L1 in some cases, causes a tyrosine kinase mutation
* See [[../Syndromes/Eosinophilia.md|Eosinophilia]]


==Clinical Manifestations==
== Pathophysiology ==


*Eosinophilia with cardiomyopathy, skin lesions, thromboembolism, pulmonary disease, neuropathy, hepatosplenomegaly, reduced ventricular size, and eczema
* Mutation in PDGFRA and FIP1L1 in some cases, causes a tyrosine kinase mutation


== Clinical Presentation ==
== Differential Diagnosis ==


* Refer to [[Eosinophilia#Differential Diagnosis|Eosinophilia]]
* Eosinophilia with cardiomyopathy, skin lesions, thromboembolism, pulmonary disease, neuropathy, hepatosplenomegaly, reduced ventricular size, and eczema


==Diagnosis==
== Investigations ==


* Molecular testing for PDGFRA and FIP1L1
*Molecular testing for PDGFRA and FIP1L1


== Management ==
==Management==


* Steroids
*Steroids
* +/- mepolizumab for steroid-sparing
*+/- mepolizumab for steroid-sparing
* +/- imatinib if PDGFRA/FIPL1 positive
*+/- imatinib if PDGFRA/FIPL1 positive


== Prognosis ==
==Prognosis==


* Progressive and fatal
*Progressive and fatal


[[Category:Immunology]]
[[Category:Immunology]]

Latest revision as of 14:53, 29 July 2020

Background

  • Idiopathic eosinophilia persisting for more than 6 months without identifiable cause

Pathophysiology

  • Mutation in PDGFRA and FIP1L1 in some cases, causes a tyrosine kinase mutation

Clinical Manifestations

  • Eosinophilia with cardiomyopathy, skin lesions, thromboembolism, pulmonary disease, neuropathy, hepatosplenomegaly, reduced ventricular size, and eczema

Differential Diagnosis

Diagnosis

  • Molecular testing for PDGFRA and FIP1L1

Management

  • Steroids
  • +/- mepolizumab for steroid-sparing
  • +/- imatinib if PDGFRA/FIPL1 positive

Prognosis

  • Progressive and fatal