Congenital cystic adenomatoid malformation of the lung: antenatal ultrasound findings and fetal-neonatal outcome. Fifteen years of experience.

Seventeen cases of congenital cystic adenomatoid malformation of the lung (CCAM) are reported. They were followed up over a period of 1 month to 15 years. Diagnosis was made by prenatal ultrasound. Our purpose was to evaluate the fetal-neonatal outcome and the prognostic elements observable through ultrasound techniques, and to compare all types of CCAM. The outcome observed ranged from total prenatal resolution to postnatal spontaneous regression of the lesion, to complications due to the presence of nonimmune fetal hydrops (NIFH), intrauterine death and the necessity of surgical intervention. In our experience only hydrops represented a negative predictor of outcome since death occurred in all cases with this pathology. In the absence of NIFH, counselling should stress the prevalence of a positive outcome, even in cases of surgical intervention.