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Fetal abnormalities are conditions that affect a fetus or embryo, are able to be diagnosed prenatally, and may be fatal or cause disease after birth. They may include aneuploidies, structural abnormalities, or neoplasms. Acardiac twin; Achondrogenesis; Achondroplasia
Birth defect is a widely used term for a congenital malformation, i.e. a congenital, physical anomaly that is recognizable at birth, and which is significant enough to be considered a problem.
Caudal regression syndrome, or sacral agenesis (or hypoplasia of the sacrum), is a rare birth defect. It is a congenital disorder in which the fetal development of the lower spine—the caudal partition of the spine—is abnormal. [1] It occurs at a rate of approximately one per 60,000 live births. [2]
Congenital cardiac anomalies including pulmonary artery stenosis and patent ductus arteriosus can be seen in infants with CRS. Infants should undergo cardiac evaluation soon after birth and those with confirmed cardiac lesions will require specialized care with a pediatric cardiologist for any interventions and follow-up care. [4]
The VACTERL association (also VATER association, and less accurately VACTERL syndrome) refers to a recognized group of birth defects which tend to co-occur (see below).This pattern is a recognized association, as opposed to a syndrome, because there is no known pathogenetic cause to explain the grouped incidence.
Congenital anomaly (birth defect), a disorder present at birth Physical anomaly, a deformation of an anatomical structure Congenital vertebral anomaly, any of several malformations of the spine; Collie eye anomaly, eye disease of dogs; Coronary artery anomaly, a congenital abnormality in the heart; Ebstein's anomaly, a congenital heart defect
fetal infections (maternofetal infections) genetic causes (or intrinsic causes) (genetic malformative diseases) chromosomal anomalies (chromosomal malformative diseases) numerical chromosomal anomalies (e.g. trisomy 13, trisomy 18, trisomy 21) structural chromosomal anomalies microdeletions (microdeletion syndromes) chromosomal rearrangements
Esophageal atresia is a congenital medical condition (birth defect) that affects the alimentary tract. It causes the esophagus to end in a blind-ended pouch rather than connecting normally to the stomach. It comprises a variety of congenital anatomic defects that are caused by an abnormal embryological development of the esophagus.