Intraventricular neoplasms and lesions

Intraventricular neoplasms are rare and arise from periventricular structures such as the walls of the ventricular system, the septum pellucidum and the choroid plexus. Many tumor types arise from or can bulge into the ventricular system, although there are certain lesions that are relatively restricted to ventricles. A number of factors assist in defining the differential diagnosis, both radiological and clinical, including where the lesion is positioned within the ventricle as well as age and any associated conditions ⁴.

Neoplasms of the ventri­cular wall and septum pellucidum

• ependymoma

• subependymoma

• central neurocytoma

• myxoid glioneuronal tumor

• subependymal giant cell astrocytoma

Neoplasms of the choroid plexus

• choroid plexus papilloma

• choroid plexus carcinoma

See: choroid plexus tumors.

Others

• intraventricular meningioma

• intraventricular metastasis

• oligodendroglioma

• pilocytic astrocytoma

• glioblastoma ³

• intraventricular CNS lymphoma

• medulloblastoma

• primitive neuroectodermal tumor

• sarcoma

• intraventricular teratoma

• chordoid glioma of the third ventricle 

• rosette-forming glioneuronal tumors

• ring-shaped lateral ventricular nodules

Non-neoplastic lesions 

• colloid cysts

• neurocysticercosis

• intracranial hydatid cyst

• intracranial tuberculoma

See also

• syndrome of the trigone