CTICasesCongenital Pulmonary Airway Malformation (CPAM) Type 1
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Imaging findings
Chest CT in a 22-year-old female reveals a localized conglomerate of large, thin-walled cystic lesions in the right upper lobe, surrounded by hyperaerated lung parenchyma, without mucus plugging or air-fluid levels.
Key takeaways
Congenital pulmonary airway malformation (CPAM) type 1 is characterized by one or more large, dominant cysts (>2 cm) and is the most common form of CPAM. Although typically diagnosed prenatally or in infancy, it can remain asymptomatic and present in young adults with asthma-like symptoms, recurrent infections, or chronic mucus production, often managed by lobectomy.
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