Prenatal / neonatal concordance
For the 75 cases, the final diagnosis based on post-natal CT-scan or
post-operative conclusion was BC in 5 cases (7%), PCM in 5 cases (7%),
hybrid malformations in 10 cases (13%), BPS in 25 cases (33%) and CLE
in 30 cases (40%).
On postnatal evaluation, 35/75 (45%) patients had a systemic arterial
supply, confirming a BPS or a hybrid malformation. Among them, 27 had a
prenatal detection of a systemic arterial supply. In one case a systemic
arterial supply was described in the prenatal ultrasound, but not
confirmed after birth (one patient with CLE).
The prenatal detection of a systemic arterial supply had a sensitivity
of 96%, a specificity of 83%, a positive predictive value of 77% and
a negative predictive value of 98%.
On postnatal evaluation, 37/75 (49%) patients had a malformation with
cystic component: BC, PCM or CLE associated to a bronchocele. Among
them, 25 had a prenatal cystic component associated to the hyperechoic
image. In 11 cases a cystic component was described in the prenatal
ultrasound, but not confirmed after birth (CLE or BPS).
The prenatal detection of a cystic component had a sensitivity of 69%,
a specificity of 69 %, a positive predictive value of 67% and a
negative predictive value of 71%.