title: Hot tub lung mimicking classic acute and chronic hypersensitivity pneumonitis: two case reports.
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.
authors: Department of Medicine, Division of Respirology, University Health Network, University of Toronto, Toronto, Ontario.
authors: Geetika
authors: G
authors: Verma
authors: Frances
authors: F
authors: Jamieson
authors: Pamela
authors: P
authors: Chedore
authors: David
authors: D
authors: Hwang
authors: Scott
authors: S
authors: Boerner
authors: William R
authors: WR
authors: Geddie
authors: Kenneth R
authors: KR
authors: Chapman
authors: Theodore K
authors: TK
authors: Marras
mesh_terms: D000208:Acute Disease; D000336:Aerosols; D000542:Alveolitis, Extrinsic Allergic / Q000175:diagnosis* / Q000382:microbiology*; D002908:Chronic Disease; D003937:Diagnosis, Differential; D006358:Hot Temperature; D006801:Humans; D019570:Inhalation Exposure; D008297:Male; D008875:Middle Aged; D009165:Mycobacterium Infections, Nontuberculous / Q000175:diagnosis* / Q000382:microbiology*; D009170:Nontuberculous Mycobacteria / Q000302:isolation & purification*; D012129:Respiratory Function Tests; D014871:Water Microbiology
chemical_list: D000336:Aerosols