Simple Eosinophilic Pneumonia
Definition
- Transient, minimally symptomatic pulmonary eosinophil infiltrates
Alternate/Historical Names
- Loeffler syndrome
- Visceral larva migrans
Covered Separately
Diagnostic Criteria
Clinical
- Asymptomatic or minimally symptomatic
- Generally self-limited
X-ray
- Transient pulmonary opacities
Pathology
- Hypereosinophilia must be demonstrated in the blood or lung to make the diagnosis
- Blood eosinophils usually mildly elevated
- Bronchoalveolar lavage and biopsy rarely performed
- Generally due to parasitic infection
- Classically Ascaris larvae migrating through the lung
Gerald J Berry MD
Robert V Rouse MD
Department of Pathology
Stanford University School of Medicine
Stanford CA 94305-5342
