Meningohydroencephalocoele

Meningohydroencephalocoele (AmE: meningohydroencephalocele) is a form of meningocele (AmE) - a developmental abnormality of the central nervous system.

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Like meningocoele, meningohydroencephalocoele is caused by defects in bone ossification; in particular, the intramembranous ossification related to the closure of infantile fontanelles. It refers to the protrusion of the meninges between the un-fused bones, to lie subcutaneously.

• Meningocoele - refers to herniation of meninges.

• Meningoencephalocoele refers to the condition if brain tissue is included with the meninges in the herniation.

• Meningohydroencephalocoele refers to the condition including meninges, brain tissue and part of the ventricular system in the herniation.

These defects occur in approximately 1 in 2000 live births