Hot tub lung
Citation, DOI, disclosures and article data
Citation:
Weerakkody Y, Hacking C, Knipe H, et al. Hot tub lung. Reference article, Radiopaedia.org (Accessed on 13 Dec 2024) https://doi.org/10.53347/rID-25898
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rID:
25898
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Disclosures:
At the time the article was created Yuranga Weerakkody had no recorded disclosures.
View Yuranga Weerakkody's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Craig Hacking had no recorded disclosures.
View Craig Hacking's current disclosures
Revisions:
8 times, by
6 contributors -
see full revision history and disclosures
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Synonyms:
- MAC induced granulomatous pneumonitis
- MAIC induced granulomatous pneumonitis
- Atypical mycobacterium induced granulomatous pneumonitis
Hot tub lung refers to pulmonary disease in otherwise healthy patients that can occur by secondary exposure to aerosolized non-tuberculous mycobacteria in contaminated hot water-steam (classically described in hot tubs, hence the name).
On this page:
Clinical presentation
It can present as an acute pulmonary illness with fever and dyspnea.
Pathology
The pathology of hot tub lung is thought to be related to an infection, a hypersensitivity reaction (the latter is more favored) or both. Therefore it is also sometimes classified as a precipitant for hypersensitivity pneumonitis. A granulomatous pneumonitis then tends to occur.
Hypersensitivity pneumonitis-like reaction to mycobacteria can also occur from exposures other than just hot tubs.
Radiographic features
CT
Imaging appearances can mimic a subacute hypersensitivity pneumonitis from other causes 1. Described features include 1,5:
- areas of ground glass attenuation
- centrilobular pulmonary nodules
- air trapping on expiratory images
- beading of the interlobular septae
See also
References
- 1. Pham RV, Vydareny KH, Gal AA. High-resolution computed tomography appearance of pulmonary Mycobacterium avium complex infection after exposure to hot tub: case of hot-tub lung. J Thorac Imaging. 2003;18 (1): 48-52. Pubmed citation
- 2. Verma G, Jamieson F, Chedore P et-al. Hot tub lung mimicking classic acute and chronic hypersensitivity pneumonitis: two case reports. Can. Respir. J. 2008;14 (6): 354-6. Free text at pubmed - Pubmed citation
- 3. Hanak V, Kalra S, Aksamit TR et-al. Hot tub lung: presenting features and clinical course of 21 patients. Respir Med. 2006;100 (4): 610-5. doi:10.1016/j.rmed.2005.08.005 - Pubmed citation
- 4. Marchetti N, Criner K, Criner GJ. Characterization of functional, radiologic and lung function recovery post-treatment of hot tub lung. A case report and review of the literature. Lung. 2004;182 (5): 271-7. doi:10.1007/s00408-004-2508-1 - Pubmed citation
- 5. Hartman TE, Jensen E, Tazelaar HD et-al. CT findings of granulomatous pneumonitis secondary to Mycobacterium avium-intracellulare inhalation: "hot tub lung". AJR Am J Roentgenol. 2007;188 (4): 1050-3. doi:10.2214/AJR.06.0546 - Pubmed citation
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