ventriculomegaly
Pronunciation: ven-TRIK-yoo-loh-MEG-ah-lee
Enlargement of fetal cerebral ventricles often indicating hydrocephalus development.
Full Definition
Ventriculomegaly refers to enlargement of the lateral cerebral ventricles beyond normal parameters (typically >10mm atrial width). In fetal surgery contexts, it often develops secondary to neural tube defects like spina bifida, where cerebrospinal fluid circulation is impaired. The condition can be mild, moderate, or severe, with implications for neurodevelopmental outcomes. Progressive ventriculomegaly may indicate the need for postnatal shunt placement, though prenatal neural tube defect repair has been shown to reduce this requirement significantly.
Usage
Usage note: Specify measurement criteria and gestational age when documenting ventriculomegaly findings.
In Context
- "Serial ultrasounds demonstrated progressive ventriculomegaly prompting consideration for fetal intervention." — Maternal-fetal medicine consultation
- "Mild ventriculomegaly at 20 weeks gestation remained stable throughout pregnancy following prenatal repair." — Fetal surgery outcome report