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Here we describe a case of antenatally diagnosed congenital cystic adenomatoid malformation. Due to increasing cyst size and fetal hydrops an antenatal drain was inserted. The lesion was excised surgically soon after birth due to significant respiratory distress. During histological assessment an area of squamous metaplasia was found within the cyst wall. This developed as a result of the drain placement. At 4-year follow-up the child remains well and has experienced no long-term respiratory sequalae.

Original publication




Journal article


BMJ Case Rep

Publication Date





Adult, Cystic Adenomatoid Malformation of Lung, Congenital, Cysts, Drainage, Female, Fetal Diseases, Fetus, Humans, Hydrops Fetalis, Infant, Newborn, Lung, Metaplasia, Respiratory Distress Syndrome, Newborn, Ultrasonography, Prenatal