Core Terms & Classification

Multiloculated hydrocephalus

Multiloculated hydrocephalus is a complex form in which the ventricles are divided into multiple separate fluid compartments.

In short: Multiloculated hydrocephalus

The ventricular system is divided into isolated pockets.
It often follows infection or hemorrhage in infancy.
It can be challenging to treat and may need endoscopic procedures.
Each compartment may require its own drainage.

What it is

Multiloculated (or loculated) hydrocephalus is a complex form in which scarring divides the ventricular system into multiple separate, isolated fluid compartments. Each pocket may not drain freely into the others.

Understanding Multiloculated hydrocephalus

This form often develops after an event that causes inflammation and scarring inside the ventricles — such as a serious infection (ventriculitis) or hemorrhage in infancy. The resulting compartments can each trap fluid, making treatment challenging, because draining one pocket may not relieve the others. Management may involve endoscopic procedures to connect the compartments (fenestration) so they can be drained together, sometimes alongside a shunt. It is one of the more complex hydrocephalus situations to treat.

Why it matters

Understanding multiloculated hydrocephalus helps families see why some cases are especially complex, why a single shunt may not be enough, and why endoscopic procedures to connect compartments may be part of the plan.

Common questions

What is multiloculated hydrocephalus?

A form where the ventricles are divided into separate fluid compartments.

What causes it?

Often infection or hemorrhage, especially in infancy.

Why is it challenging to treat?

Each isolated compartment may need its own drainage.

Bottom line

Multiloculated hydrocephalus divides the ventricles into separate compartments, a complex form that may need endoscopic procedures to treat.

More terms in Core Terms & Classification

HydrocephalusHydrocephalus is a condition in which excess cerebrospinal fluid builds up within the brain's ventricles, often raising pressure inside the skull and enlarging the ventricles.
HydrocephalyHydrocephaly is an alternative term for hydrocephalus, referring to the same condition of excess cerebrospinal fluid in the brain.
"Water on the brain""Water on the brain" is a common lay term for hydrocephalus, though the fluid involved is cerebrospinal fluid, not water.
VentriculomegalyVentriculomegaly is enlargement of the brain's ventricles, which can be a sign of hydrocephalus or other conditions.
Communicating hydrocephalusCommunicating hydrocephalus is a type in which cerebrospinal fluid can still flow out of the ventricles but is not properly absorbed or circulated beyond them.

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