The midsagittal view of the fetal brain: a useful landmark in recognizing the cause of fetal cerebral ventriculomegaly

被引:12
作者
D'Addario, V [1 ]
Pinto, V [1 ]
Di Cagno, L [1 ]
Pintucci, A [1 ]
机构
[1] Univ Med Sch, Dept Obstet & Gynecol, Fetal Med Unit, Bari, Italy
关键词
Chiari II malformation; corpus callosum; Dandy-Walker complex; fetus; hydrocephalus; prenatal diagnosis; ultrasound; ventriculomegaly;
D O I
10.1515/JPM.2005.075
中图分类号
R71 [妇产科学];
学科分类号
100211 ;
摘要
Aim: To evaluate the positive predictive value of the midsagittal view of the fetal brain in recognizing the cause of ventriculomegaly diagnosed with traditional axial scan. Methods: Fifty-eight pregnant women, referred to our Center following a generic diagnosis of ventriculomegaly have been evaluated: 38 had marked and 20 had borderline ventriculomegaly. The fetal brain was scanned by the midsagittal view using a transabdominal probe in fetuses in breech presentation or transverse lie and a transvaginal probe in fetuses in cephalic presentation. The possible cause of ventriculomegaly was postulated by combining the findings of the corpus callosum/cavum septi pellucidi complex with those of the posterior fossa. The prenatal diagnoses were compared with the anatomical specimens of aborted fetuses or with postnatal neuroimaging. Results: The prenatal diagnoses were confirmed in 54/58 cases (PPV 93.1%). In the marked ventriculomegaly group, one case of partial agenesis of the corpus callosum was mistaken for a complete agenesis. In the group of borderline ventriculomegaly, two cases of partial agenesis of the corpus callosum were confused with a complete agenesis, while one case of suspected isolated ventriculomegaly was diagnosed after birth as partial agenesis of the corpus callosum. Conclusions: The sagittal scan of the fetal brain is a useful source of information and allows the contemporary view of both corpus callosum and posterior fossa, where various typical sonographic findings are present in ventriculomegaly.
引用
收藏
页码:423 / 427
页数:5
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