Correct!
1. Acute interstitial pneumonitis

Vaping and an unidentified connective tissue disorder are possibilities. However, the patient denied vaping and there is no good evidence for a connective tissue disorder. Acute interstitial pneumonitis (AIP) was first described by Hamman and Rich in 1935 (5). This later became synonymous with idiopathic pulmonary fibrosis despite major clinical, radiologic and pathologic differences. Subsequently, the diagnosis was revisited and separated from idiopathic pulmonary fibrosis by Katzenstein et al. (6) in 1986. Diagnostic criteria for AIP are listed in Table 1.

Table 1. Diagnostic criteria for AIP.

• Acute LRT illness of less than 60 days
• Diffuse bilateral radiographic infiltrates
• Organizing or proliferative diffuse alveolar damage on lung biopsy
• Absence of any known inciting event or predisposing condition
• Absence of previously abnormal chest imaging

Which of the following represents the best course for further treatment? (Click on the correct answer to be directed to the seventh and final page)

1. Azathioprine
2. Continue with corticosteroids
3. Mycophenolate
4. Tacrolimus
5. The best course for treatment is not established

Home/Pulmonary