Neoplasms located in the brain ventricles, including the two lateral, the third, and the fourth ventricle. Ventricular tumors may be primary (e.g., CHOROID PLEXUS NEOPLASMS and GLIOMA, SUBEPENDYMAL), metastasize from distant organs, or occur as extensions of locally invasive tumors from adjacent brain structures.

Synonyms: Brain Ventricular Neoplasms, Intraventricular Neoplasms, Neoplasms, Cerebroventricular, Neoplasms, Cerebral Ventricle, Cerebroventricular Neoplasm, Ventricle Tumors, Cerebral, Brain Ventricular Neoplasm, Ventricle Tumor, Cerebral, Neoplasms, Brain Ventricular, Cerebroventricular Neoplasms, Tumor, Brain Ventricular, Neoplasm, Cerebroventricular, Cerebral Ventricle Tumors, Tumors, Cerebral Ventricle, Intraventricular Neoplasm, Neoplasms, Intraventricular, Cerebral Ventricle Tumor, Ventricular Neoplasm, Brain, Tumor, Cerebral Ventricle, Brain Ventricular Tumor, Brain Ventricular Tumors, Ventricular Tumors, Brain, Tumors, Brain Ventricular, Ventricular Tumor, Brain, Neoplasm, Intraventricular, Cerebral Ventricle Neoplasm, Neoplasm, Cerebral Ventricle, Cerebral Ventricle Neoplasms, Ventricular Neoplasms, Brain, Neoplasms, Ventricular, Brain, Neoplasm, Brain Ventricular