Poster abstracts serum ALP was extremely low (20 U/L, normal range of 70 U/L). Further diagnostic testing was performed which determined that the infant had a heterozygous 1559delT mutation. Based on these findings, we suggest that ALP assay of a chorionic villi sample is strongly recommended in order to obtain more confident diagnosis of this lethal skeletal dysplasia when poorly ossified facial bone detected during the first trimester ultrasound examination. P34.05Prenatal ultrasound detection of primary endocardial fibroelastosis in 12-13 weeks of gestation: a case report T. Liliana, T. Olga Ultrasound Department, Republican Clinical Hospital of Ministry of Health of Tatarstan Republic, Kazan, Russian FederationLeft ventricular endocardial fibroelastosis was diagnosed during routine first trimester ultrasound scanning. There was one embryo in uteri, CRL = 65 mm, NT = 2.2 mm, nasal bone was normal. The big size of fetal heart attracted our attention. The detailed investigation of the heart found a dilatated and hypotonic left ventricle. Color doppler did not detect blood flow in left ventricle. Blood flow in right ventricle, detected by color doppler, was visualized well. The second thing, what we had found, there was hyperechogenic sligtly interrapted line in walls of left ventricle, including septum. Two criteria: dilatated and hypotonic left ventricle without blood flow and hyperechogenic walls of left ventricle gave us the possibility to diagnose fetal endocardial fibroelastosis. The absence of other heart anomalies showed that it was primary fibroelastosis. It is interesting to mark, that there were no signs of hydrops fetalis, fetal anatomy was normal. We think that it is the the earliest appearance of primary fibroelastosis. P34.06Vesical puncturing for the first trimester prune belly syndrome J. Choi, H. Lee, G. Kim Chung-Ang Univ. Medical Center, Seoul, Republic of KoreaThe prune belly syndrome (PBS) is a kind of congenital obstructive uropathy which consists of three distinctive features: abdominal wall distention with deficiency of the abdominal wall musculature, urinary tract abnormalities. We experienced one case of PBS diagnosed and managed at 11+6. Chorionic villi sampling revealed male fetus with normal chromosome. Vesical puncturing by spinal needle was done to drain urine into amniotic space and the aspirated urine was analyzed. One week after the needling, fetal bladder was not swollen again. However spouses opted to terminate the pregnancy after counseling. Pathology confirmed the diagnosis. We missed bilateral cleft lip and palate on prenatal ultrasonography. Although the outcome of fetuses with early obstructive uropathy have been known to be very poor with or without in utero therapy, this puncturing can be proposed as the first line of action not only for the treatment but also for the counseling with the analyzed urine. P34.07 Spontaneus reversal of cystic hygromaS. S. Herbst, L. C. Bussamra, C. L. Drummond, G. Tedesco, I. S. Britto, T. Aoki Obstetrics, Santa Casa Misericordia de São P...
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