eMedicine Specialties > Hematology > Immune System and Disorders
Hypereosinophilic Syndrome: Follow-up
Updated: Oct 4, 2009
Follow-up
Further Outpatient Care
- Periodically observe patients with hypereosinophilic syndrome to confirm that the eosinophilia is controlled and that no evidence of new or worsening organ involvement occurs.
- Follow up patients with hypereosinophilic syndrome with serum troponin levels every 3 months, as well as with ECHO and pulmonary function tests every 6 months.
Deterrence/Prevention
- No known method of prevention for hypereosinophilic syndrome exists.
Complications
- Many varied complications of hypereosinophilic syndrome depend entirely on the organ systems that are involved in the disease process (see Clinical and Pathophysiology).
- The most serious complication of hypereosinophilic syndrome is cardiac involvement that leads to myocardial fibrosis, CHF, and death (see Pathophysiology).
Prognosis
- Hypereosinophilic syndrome carries a variable prognosis. It is a chronic and progressive disorder which is potentially fatal if left untreated. Blast transformation could occur after many years.
- Although initial studies for hypereosinophilic syndrome showed a very poor prognosis (a 3-y survival rate of 12%),4 management of cardiovascular disease by early monitoring via ECHO and advances in medical and surgical therapies have improved the overall survival. A study of 40 cases by Lefebcve et al showed a 5-year survival of 80% and a 15-year survival of 42%.22 As discussed above, due to the availability of tyrosine kinase inhibitors, which prevent progression of cardiac disease and other organ damage—particularly in FIP1L1/PGDFRA– positive cases—these agents will likely further improve the prognosis of hypereosinophilic syndrome (see Treatment, Medical Care, Tyrosine kinase inhibitors). However, FIP1L1/PGDFRA– negative cases of hypereosinophilic syndrome that are resistant to corticosteroids have not been shown to have a durable response to imatinib.Lastly, additional insight into the molecular pathogenesis of such cases of hypereosinophilic syndrome is required to develop effective targeted therapies.
- Features that indicate a favorable prognosis in hypereosinophilic syndrome include angioedema, urticaria, an elevated serum IgE level, a sustained response to corticosteroids, early diagnosis, and intensive management.
- The presence of features that are suggestive of MPD and luekocytosis >90,000 carry a worse prognosis in hypereosinophilic syndrome.
Patient Education
- Individuals with hypereosinophilic syndrome should report any new or worsening symptoms.
- Hypereosinophilic syndrome may involve almost any organ system, and the prognosis is variable.
Miscellaneous
Medicolegal Pitfalls
- Failure to make the diagnosis of hypereosinophilic syndrome is a pitfall. Because the onset of hypereosinophilic syndrome is often insidious, the diagnosis may be overlooked until significant end-organ impairment has occurred.
More on Hypereosinophilic Syndrome |
| Overview: Hypereosinophilic Syndrome |
| Differential Diagnoses & Workup: Hypereosinophilic Syndrome |
| Treatment & Medication: Hypereosinophilic Syndrome |
Follow-up: Hypereosinophilic Syndrome |
| Multimedia: Hypereosinophilic Syndrome |
| References |
| Further Reading |
| « Previous Page | Next Page » |
References
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Further Reading
Related eMedicine Topics
- Hypereosinophilic Syndrome [in the Dermatology section]
- Hypereosinophilic Syndrome [in the Pediatrics: General Medicine section]
- Loeffler Endocarditis [in the Cardiology section]
- Mastocytosis, Systemic
Keywords
hypereosinophilic syndrome, HES, idiopathic hypereosinophilic syndrome, Loeffler endocarditis, Loeffler's endocarditis, chronic eosinophilic leukemia, CEL, eosinophilia, systemic mastocytosis –associated eosinophilia, SM-CEL, FIP1L1-PDGFRA mutation, C-KIT mutation, tyrosine kinase inhibitors
Follow-up: Hypereosinophilic Syndrome