Is Mild Ventriculomegaly normal?

The chance that mild ventriculomegaly represents a normal variant decreases with increasing degrees of dilation. Mild ventriculomegaly is likely to represent a normal variant if no other structural abnormalities are noted and if aneuploidy screening or diagnostic genetic testing results are normal.Aug 15, 2018

Should I worry about mild ventriculomegaly?

We recommend that with isolated mild ventriculomegaly of 10–12 mm, after a complete evaluation, women be counseled that the outcome is favorable, and the infant is likely to be normal.

Can mild ventriculomegaly go away?

If your child has mildly enlarged brain ventricles or ventriculomegaly without other complications, the condition may resolve on its own.

How common is ventriculomegaly in fetus?

If the ventricles are more than 15 mm wide, the enlargement is considered severe. Fetal ventriculomegaly occurs in approximately one in every 1,000 births, and in roughly half of the cases, there are no other findings or abnormalities in the baby.

Can enlarged brain ventricles be normal?

The brain may shrink in older patients or those with Alzheimer’s disease, and CSF volume increases to fill the extra space. In these instances, the ventricles are enlarged, but the pressure usually is normal.

How can ventriculomegaly affect my child?

If the ventriculomegaly progresses, the baby may have symptoms of hydrocephalus, including: an unusually large head. a rapid increase in head size. extreme sleepiness.

How common is mild ventriculomegaly?

Because the chance of an adverse outcome and potential for other abnormalities are higher when the ventricles measure 13–15 mm vs 10–12 mm, the latter classification method should be used for the purposes of patient counseling. The incidence of mild to moderate fetal ventriculomegaly is approximately 1%.

Is ventriculomegaly a disability?

Ventriculomegaly associated with abnormal findings and other structural malformations, often has an adverse prognosis, which ranges from disability (often mild) to death. However, in cases of mild isolated ventriculomegaly, there is around a 90% chance of a normal outcome.

Can ventriculomegaly cause autism?

Conclusion. In LBW neonates, cranial ultrasound evidence of ventricular enlargement is a strong, and significant risk factor for subsequent development of rigorously-diagnosed ASD.

How does ventriculomegaly affect the brain?

Ventriculomegaly is a condition in which the fluid-filled spaces within the brain (ventricles) appear larger than normal on a fetal ultrasound, suggesting an increase in fluid in the fetal brain.

Can ventriculomegaly be treated?

How is ventriculomegaly treated? Treatment is usually only required if a baby shows signs of developing hydrocephalus. The aim of treatment is to reduce the pressure on the brain by draining away the CSF. In most cases, the fluid is drained away using a ‘shunt’, which is a long tube made of silicone.

How often does ventriculomegaly resolve?

Isolated fetal ventriculomegaly (VM) is often an incidental benign finding on antenatal ultrasound (US), although it can be associated with genetic, structural, and neurocognitive disorders. The literature suggests that over 40% of mild VM will resolve in utero.

What causes ventriculomegaly?

What Causes Ventriculomegaly? Ventriculomegaly is sometimes caused by too much fluid in the brain. Other times, the ventricles look big because the surrounding brain is too small.

What virus can cause ventriculomegaly?

These are: Cytomegalovirus—an infection caused by a type of herpes virus.
Things that may raise the risk of this problem in a child are:

  • Brain cysts.
  • Spina bifida.
  • Bleeding within the brain.
  • A rare birth defect called agenesis of the corpus callosum.

When is ventriculomegaly diagnosed?

Ventriculomegaly is an excess of fluid in the lateral ventricles within the developing cerebrum. It is usually diagnosed at a routine fetal anomaly scan at 18–22 weeks gestation.

What is borderline ventriculomegaly?

5 Borderline ventriculomegaly is defined as an atrial width of 10–15 mm at 15−40 weeks of gestation. Although fetal cerebral ventriculomegaly can be diagnosed relatively easily and accurately using ultrasonography, determi- nation of fetal outcomes is more complicated, and this affects the counseling of mothers.

What is the difference between ventriculomegaly and hydrocephalus?

This fluid cushions the brain in the skull and exists in the spinal canal as well as the spaces in the brain called the ventricles. Ventriculomegaly, also known as hydrocephalus, is a condition in which the CSF-filled structures within the brain become larger than normal.

What is the lower limit of the lateral ventricle in fetus?

The lateral ventricular width (LVW) range for normal fetuses was 0.7 to 1.1 cm as compared with a LVW range of 1.1 to 2.7 cm for 16 fetuses with hydrocephalus diagnosed during the second trimester.

What is VP in pregnancy?

Vasa previa (VP) is a condition that can result in a devastating fetal outcome, especially if it is not diagnosed during the antepartum period.

What is a BPD measurement?

BPD (biparietal diameter), the diameter of your baby’s head. HC (head circumference), the length going around your baby’s head. CRL (crown-rump length), the length from the top of the head to your baby’s bottom, measurement taken in the first trimester.

What is severe fetal ventriculomegaly?

Severe fetal ventriculomegaly (VM) is defined as an enlargement of the atria of the lateral cerebral ventricles (Vp) of greater than 15 mm.

What is FL BPD?

A linear relationship between growth of fetal femur length (FL) and biparietal diameter (BPD) after 22 weeks’ gestation is described.

What is normal BPD?

Your doctor is looking for the BPD measurement, as well as the other measurements, to be within what is considered normal range. The biparietal diameter measurement increases from roughly 2.4 centimeters at 13 weeks to approximately 9.5 centimeters when a fetus is at term.

What is normal BPD in pregnancy for boy?


Gestational age Male Fetuses
N Mean BPD (mm)
19 1383 45.5±2.4
20 1116 48.1±2.3
21 344 51.1±2.5