Related Experiment Video
Updated: Jul 11, 2026

A Model of Self-limited Acute Lung Injury by Unilateral Intra-bronchial Acid Instillation
Published on: August 30, 2019
Hot tub lung mimicking classic acute and chronic hypersensitivity pneumonitis: two case reports
Geetika Verma1, Frances Jamieson, Pamela Chedore
1Department of Medicine, Division of Respirology, University Health Network, University of Toronto, Toronto, Ontario.
Abstract:
Pulmonary disease in otherwise healthy patients can occur by secondary exposure to nontuberculous mycobacteria from hot tubs. The pathology of hot tub lung may be related to an infection, a hypersensitivity reaction or both. Previous reports of hot tub lung have highlighted distinct pathological features that have distinguished this entity from classic hypersensitivity pneumonitis. Two cases of hot tub lung in Ontario, which presented at very different time points in their disease course, are reported; one patient presented more fulminantly with a clinical picture resembling subacute hypersensitivity pneumonitis, and the other presented with chronic disease. Both cases exhibited clinical, radiological and pathological findings closely mimicking classic subacute and chronic hypersensitivity pneumonitis.
Related Concept Videos
Pulmonary Tuberculosis II
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Pulmonary Tuberculosis III
The first classification is based on the development of the disease, and it includes the following categories:
Atypical Pneumonia
Chronic Obstructive Pulmonary Disease II: Emphysema
Pulmonary Tuberculosis I
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features