OP19.05: Ipsilateral lung volumes assessed by three‐dimensional ultrasonography in 39 fetuses with isolated congenital diaphragmatic hernia

Abstract

Oral poster abstractsBackground: CCAM is an uncommon pathology that involves proliferation of terminal respiratory bronchioles. The diagnosis is often made in the prenatal period using ultrasound. The antenatal diagnosis has become more frequent with increasing sonographer training and higher resolution ultrasound imaging platforms. Methods: This was a retrospective analysis of all fetuses of CCAM diagnosed antenatally that were born in our department during last three years. The ultrasound diagnosis was confirmed by prenatal MRI scan in all cases. Results: In a 3-years period, 14 cases of fetal CCAM were reffered for further management. All the lesions were noted to be unilateral CCAMs. The gestational age at diagnosis was 16-22 weeks. Two cases were diagnosed as CCAM type I (14%), 5 CCAM type II (36%) and 7 CCAM type III (50%). In two cases diagnostic type of CCAM was different from US and MRI investigations. The lesions were usually complicated by varying degrees of mediastinal sfift (78%). Severe hydrops fetalis was present in two cases only (14%). All the fetuses had normal karyotype. Termination of pregnancy was performed in three cases. Spontaneous regression of the sonographic appearances during pregnancy was observed in 46% (5/11) cases. All cases had good perinatal outcome (91% after postnatally surgery). Conclusions:The postnatal outcome of fetal CCAM is better than previously assumed, probably because of the detection ob subtle lesions and the high rate of prenatal spontaneous resolution of such tumors.