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, Cerebroventricular Neoplasm, Neoplasms, Cerebral Ventricle, Ventricle Tumors, Cerebral, Neoplasms, Brain Ventricular, Ventricle Tumor, Cerebral, Cerebroventricular Neoplasms, Brain Ventricular Neoplasm, 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 Tumors, Brain Ventricular Tumor, 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