Ventriculomegaly
Ventriculomegaly is a brain condition that mainly occurs in the fetus when the lateral ventricles become dilated. The most common definition uses a width of the atrium of the lateral ventricle of greater than 10 mm.[1] This occurs in around 1% of pregnancies.[2] When this measurement is between 10 and 15 mm, the ventriculomegaly may be described as mild to moderate. When the measurement is greater than 15mm, the ventriculomegaly may be classified as more severe.[3]
Enlargement of the ventricles may occur for a number of reasons, such as loss of brain volume (perhaps due to infection or infarction), or impaired outflow or absorption of cerebrospinal fluid from the ventricles, called hydrocephalus or normal pressure hydrocephalus associated with conspicuous brain sulcus. Often, however, there is no identifiable cause. The interventricular foramen may be congenitally malformed, or may have become obstructed by infection, hemorrhage, or rarely tumor, which may impair the drainage of cerebrospinal fluid, and thus accumulation in the ventricles.[citation needed]
This diagnosis is generally found in routine fetal anomaly scans at 18–22 weeks gestation. It is one of the more common abnormal brain findings on prenatal ultrasound, occurring in around 1–2 per 1,000 pregnancies.[4] In many cases of mild ventriculomegaly, however, there is resolution of ventriculomegaly during the pregnancy.
Glossary Quick Search
Acardiac Twin
Achondrogenesis
Acrania
Agenesis of the Corpus Callosum
Amelia
Amniocentesis
Amniotic Band Syndrome
Anembryonic Pregnancy
Anencephaly
Aneuploidy
Aneuploidy Screening
Anhydramnios
Antenatal Surveillance
Aqueductal Stenosis
Arthrogryposis
Asphyxiating Thoracic Dystrophy (ATD)
Atelosteogenesis Type 2
Atrial Septal Defect
Autosomal Recessive
Autosomal Dominant
Atrioventricular Septal Defect (AVSD)
Camptomelic Dysplasia
Cardiac Rhabdomyoma
Carrier Screening
Caudal Regression Syndrome
Cell Free DNA
Chiari Malformation
Chloacal Anomaly
Chorionic Villus Sampling (CVS)
Choroid Plexus Cyst
Chromosomal Deletion
Chromosomal Duplication
Chromosomal Translocation
Chromosomes
Cleft Lip
Cleft Palate
Comfort Care
Congenital
Congenital Chylothorax
Congenital Heart Defect
Congenital High Airway Obstruction Syndrome (CHAOS)
Congenital Scoliosis
Craniopagus Conjoined Twins
Criss-Cross Heart
Cyanotic Heart Disease
Cystic Hygroma
Cytomegalovirus (CMV)
Pallister Killian Syndrome
Pediatric Hospice
Pediatric Paliative Care
Pena-Shokeir Syndrome
Pentalogy of Cantrell
Percutaneous Umbilical Blood Sampling (PUBS)
Pericardial Effusion
Perinatal Hospice
Perinatal Loss
Perinatal Palliative Care
Perinatal Period
Pleural Effusion
Polycystic Kidney Disease
Polyhydramnios
Porencephaly
Positive Predictive Value
Potter Syndrome
Pregnancy Continuation
Pregnancy Loss
Pregnancy Termination
Prenatal Diagnosis
Pulmonary Hypoplasia