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Related Experiment Video

Updated: Dec 21, 2025

Generation of Electronic Cigarette Aerosol by a Third-Generation Machine-Vaping Device: Application to Toxicological Studies
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E-Cigarette or Vaping Product Use-Associated Lung Injury: A Review for Pathologists.

Matthew J Cecchini1, Sanjay Mukhopadhyay2, Andrea V Arrossi2

  • 1From the Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota (Cecchini).

Archives of Pathology & Laboratory Medicine
|May 14, 2020
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Summary
This summary is machine-generated.

Vaping-associated lung injury presents nonspecific patterns, often with foamy macrophages. Diagnosis requires clinicopathologic correlation, as specific features are not yet identified.

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Area of Science:

  • Pulmonology
  • Pathology
  • Toxicology

Background:

  • Vaping involves inhaling aerosolized substances from electronic devices.
  • A recent surge in severe respiratory illnesses has highlighted the risks associated with vaping.
  • Understanding vaping-related lung injury is crucial for medical professionals.

Purpose of the Study:

  • To educate pathologists on the cytologic and histopathologic findings of vaping-associated acute lung injury.
  • To clarify the role of pathology in diagnosing vaping-related lung conditions.
  • To review the current literature on vaping-induced respiratory diseases.

Main Methods:

  • A targeted literature review was conducted.
  • Analysis of existing research on vaping-associated lung injury.
  • Synthesis of cytologic and histopathologic data.

Main Results:

  • Vaping-associated lung injury is frequently linked to products containing tetrahydrocannabinol (THC) or cannabinoids.
  • Histopathology reveals nonspecific acute lung injury patterns with significant foamy macrophage accumulation, often around small airways.
  • Lipid-laden macrophages in lavage fluid are common but not diagnostic; specific features of exogenous lipoid pneumonia are absent.

Conclusions:

  • No unique pathologic features definitively diagnose vaping-related lung injury.
  • The condition is a diagnosis of exclusion, necessitating correlation with clinical information.
  • Foamy macrophages are a key, though nonspecific, finding in vaping-associated lung injury.