Anencephaly.
نویسندگان
چکیده
Anencephaly is an open neural tube [5] defect, meaning that part of the neural tube [5] does not properly close or that it has reopened during early embryogenesis [6]. An embryo with anencephaly develops without the top of the skull, but retains a partial skull, including the face. Anencephaly is one of the most common birth defects [7] of the neural tube [5], occurring at a rate of approximately one in one thousand human pregnancies. The condition can be caused by environmental exposure to chemicals, dietary deficiencies, or genetic mutations.
منابع مشابه
Evaluation of Epidemiology of Anencephaly of 149408 Deliveries
SUMMARY Anencephaly is one of the major congenital neurologic malformations whose incidence had been reported to be of 0.3 to 6 per 1000 births. Due to its importance and undefinite incidence, and the role of certain significant factors that cause the disease in Iran, this study was carried out on 149498 live born and stillborn infants, born in Tehran Medical University centers from 1988 throu...
متن کاملPrevalence of anencephaly in Gorgan, northern Iran.
BACKGROUND Anencephaly is a neural tube defect incompatible with life. The aim of this prospective study was to determine the prevalence of anencephaly in Gorgan, northern Iran. METHODS During 1998 - 2005, 49,534 newborns at Dezyani hospital in Gorgan were screened for neural tube defects. Clinical and demographic data of the diagnosed cases were recorded in a pre-designed questionnaire for a...
متن کاملRachischisis and Anencephaly
SUMMARY Antenatal ultrasonography has an important rule in diagnosis of congenital malformation. At present identification of most major congenital abnormality during pregnancy depends on . sensitivity and resolution of the instrument, skilful and experienced sonologist and gestational age. Cranial and spinal defects and other malformations can be ferquently diagnosed with ultrasound. Major a...
متن کاملAnencephaly with diaphragmatic hernia in sibs.
Two sibs who both had anencephaly and diaphragmatic hernia are reported. The type of diaphragmatic defect seen in anencephaly may differ from the defect seen in other babies. It is important to perform a necropsy in anencephaly.
متن کاملSpina bifida and anencephaly: are miscarriages a possible cause?
The marriage-to-conception interval in 151 pregnancies producing infants with anencephaly or spina bifida was not significantly different from that in 218 pregnancies resulting in normal infants. Significantly more miscarriages occurred before than after the birth of 285 infants with anencephaly or spina bifida, but in 133 controls no before-after difference was observed. These observations see...
متن کاملDo assisted conception twins have an increased risk for anencephaly?
BACKGROUND The incidence rates of anterior neural tube defects, anencephaly and encephalocele appear increased among twins compared with singletons. The current study aimed to evaluate whether the etiology of this phenomenon is related to twinning, assisted reproductive technology (ART), or both. METHODS The study cohort consisted of parturient women who were referred to our ultrasonography u...
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عنوان ژورنال:
- Bulletin de la Societe belge d'ophtalmologie
دوره 191 شماره
صفحات -
تاریخ انتشار 1971