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Related Experiment Videos

Pulmonary dirofilariasis. The largest single-institution experience.

W H Risher1, E F Crocker, E N Beckman

  • 1Department of Surgery, Oshsner Clinic, New Orleans, LA 70121.

The Journal of Thoracic and Cardiovascular Surgery
|February 1, 1989
PubMed
Summary

Pulmonary dirofilariasis, a rare lung condition caused by the dog heartworm (Dirofilaria immitis), often presents as a solitary nodule. Diagnosis requires surgical removal and histologic examination, with increasing prevalence noted.

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Area of Science:

  • Veterinary Pathology
  • Human Pathology
  • Parasitology

Background:

  • Pulmonary dirofilariasis is an uncommon parasitic lung disease caused by Dirofilaria immitis, the etiological agent of canine heartworm.
  • Diagnosis is typically confirmed post-thoracotomy via histological examination of solitary pulmonary nodules.

Observation:

  • The Ochsner Clinic reported six cases, representing the largest single-institution series of pulmonary dirofilariasis resections.
  • This condition, though rare, is increasingly recognized, with only 70 cases previously reported in the United States.

Findings:

  • The study reviews the pathogenesis, clinical presentation, pathology, epidemiology, and geographic distribution of pulmonary dirofilariasis.
  • Pulmonary dirofilariasis manifests as a solitary pulmonary nodule, often mistaken for malignancy.

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Implications:

  • Thoracic surgeons and pathologists must maintain a high index of suspicion for this parasitic infection presenting as a granulomatous pulmonary lesion.
  • Increased awareness and diagnostic vigilance are crucial due to the apparent rise in pulmonary dirofilariasis prevalence.