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Bronchiectasis is classically defined as irreversible bronchial dilatation that represents the sequelae of chronic airway inflammation and is permanent, reflecting the presence of bronchiectasis. It is increasingly being recognized with the wider availability of high-resolution computed tomography. In contrast to adults, children with noncystic fibrosis bronchiectasis may have resolution or significant improvement in bronchial dilatation. We report a case of reversible bronchial dilatation in an adult as evidenced by high-resolution computed tomography, which demonstrates that, although quite rare in adults, spontaneous resolution may occur.

There is high-quality evidence supporting chronic low-dose macrolide therapy in patients with NCFB. There is limited evidence of benefit of other therapies, including inhaled antibiotics and pharmacologic agents to enhance mucus clearance.

Bordetella bronchiseptica is a rare pulmonary infection, often associated with zoonotic transmission. It has been described in immunocompromised patients and those with underlying pulmonary disease. However, there are no case series describing the spectrum of disease caused by Bordetella bronchiseptica in patients with non-cystic fibrosis bronchiectasis. Here, we report three cases of Bordetella bronchiseptica infection in patients with non-cystic fibrosis bronchiectasis and highlight the pathophysiology of the microbe. While the clinical presentation can be quite variable, it is important to note that Bordetella bronchiseptica can be a cause of pulmonary exacerbations and can be difficult to eradicate.

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