Obstetrical three-dimensional ultrasound in the visualization of the intracranial midline and corpus callosum of fetuses with cephalic position
✍ Scribed by Po-Hui Wang; Tsung-Ho Ying; Pei-Chung Wang; I-Chung Shih; Long-Yau Lin; Gin-Den Chen
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 50 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0197-3851
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✦ Synopsis
necessary to rule out other clinical events such as periovular bleeding or rupture of the membranes (Bronshtein and Zimmer, 1995, Zimmer and Bronshtein, 1995). Once theses aetiologics have been ruled out, and in the absence of an invasive procedure , the existence of delayed fusion of the amniotic membrane seems related to a delay in the normal process of development . This would be consistent with the high frequency of this ®nding in fetuses affected by aneuploidy or by any type of malformation or marker related to the mechanics of the gestational ¯uids (nuchal sonolucency, cystic hygroma, hydrops, etc.)
According to available data, a delay in the process of chorioamniotic fusion in fetuses affected by a trisomy 21, without any other accompanying sonographic marker seems to confer on this ®nding a role as a Down syndrome marker. Its association with other aneuploidies and fetal structural abnormalities , indicate an invasive test to study the karyotype as well as a detailed sonographic exploration.