Trapped ventricle
Updates to Article Attributes
Trapped ventricle,also known as isolated ventricle,is a condition in which there is obstruction to the entry and exit path of CSF through the ventricle.
Clinical presentation
Presentation is that of increased intracranial pressure due to expanded trapped ventricle.
- trapped temporal horn
- triad
- hemiparesis: due to compression of internal capsule
- memory disturbance: due to compression of hippocampus
- homonymous hemianopsia: due to compression of Meyer loop
- triad
- trapped fourth ventricle
- diplopia
- ataxia
- nystagmus
Pathology
There is continuous secretion of CSF into the ventricles but due to obstruction, it gets trapped and does not exit.
Causes
- choroid plexitis/ventriculitis
- CNS tuberculosis
- hemorrhage obstructing exit pathway
- intracranial masses
- intraventricular cysts
- complication after lateral ventricular shunting 6
Location
It may involve:
Radiographic features
The involved ventricle appears as a focally dilated cystic structure that follows CSF signals on respective cross sectional imaging. The remaining ventricular system may appear normal.
There is transependymal CSF seepage around the trapped ventricle.
Key hole sign may be seen in cases of herniation of trapped fourth ventricle 1.
Treatment and prognosis
Management options include:
- treatment of the cause
- shunting of the trapped ventricle
-<a href="/articles/choroid-plexitis">choroid plexitis</a>/<a href="/articles/ventriculitis">ventriculitis</a>- +<a href="/articles/choroid-plexitis">choroid plexitis</a> / <a href="/articles/ventriculitis">ventriculitis</a>
-</ul><h5>Location</h5><p>It may involve:</p><ul>- +</ul><h5>Location</h5><ul>