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Hematology6 papers

Tropical pulmonary eosinophilia

Last edited: 4/15/2026

Overview

Tropical pulmonary eosinophilia is a pulmonary disorder primarily caused by occult filarial infection, often presenting with symptoms that can mimic asthma, tuberculosis, or atypical pneumonia 1. Eosinophilic infiltration plays a central role in its pathophysiology, contributing to airway hyperreactivity 2.

Diagnosis

  • Clinical Presentation: Variable, may mimic lymphangitic carcinomatosis, asthma, or pulmonary tuberculosis 1.
  • Laboratory Tests: Elevated peripheral eosinophil counts.
  • Imaging: Chest X-rays or CT scans may show nonspecific infiltrates or opacities 1.
  • Serological Testing: Filarial complement-fixation tests using Ascaris lumbricoides antigen can be used, showing no significant difference compared to Dirofilaria immitis antigen 3.
  • Bronchoscopy and Biopsy: May reveal eosinophilic infiltration in lung tissue 1.
  • Management

  • First-Line Treatment: Diethylcarbamazine (DEC) is typically used, though specific dosing is not provided in the abstracts 13.
  • Adjunctive Therapy: Corticosteroids may be employed to manage airway hyperreactivity and reduce eosinophilic inflammation 2.
  • Monitoring: Regular follow-up with eosinophil counts and clinical assessment to monitor response to treatment 1.
  • Special Populations

  • Pregnancy: Specific management guidelines not addressed in the provided abstracts 123.
  • Pediatrics: No specific considerations mentioned 123.
  • Elderly: No distinct management differences noted without additional context 123.
  • Comorbidities: Management considerations for comorbidities like asthma or tuberculosis overlap but are not explicitly detailed 12.
  • Key Recommendations

  • Use serological tests with Ascaris lumbricoides antigen for diagnosing tropical pulmonary eosinophilia (Evidence: Moderate 3).
  • Initiate treatment with Diethylcarbamazine (DEC) for filarial infection (Evidence: Expert opinion 1).
  • Consider corticosteroid therapy to manage airway hyperreactivity and reduce eosinophilic inflammation (Evidence: Weak 2).
  • References

    1 Enzenauer RJ, Underwood GH, Ribbing J. Tropical pulmonary eosinophilia. Southern medical journal 1990. link 2 Chhabra SK, Gaur SN. Airway hyperreactivity in tropical pulmonary eosinophilia. Chest 1988. link 3 Robinson GL, Christian M. Filarial complement-fixation test for pulmonary tropical eosinophilia with Ascaris antigen. Journal of clinical pathology 1968. link

    Original source

    1. [1]
      Tropical pulmonary eosinophilia.Enzenauer RJ, Underwood GH, Ribbing J Southern medical journal (1990)
    2. [2]
    3. [3]
      Filarial complement-fixation test for pulmonary tropical eosinophilia with Ascaris antigen.Robinson GL, Christian M Journal of clinical pathology (1968)

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