The term "intraventricular" refers to something located within the ventricles of the brain, which are the four fluid-filled cavities that produce and circulate cerebrospinal fluid. Synonyms for "intraventricular" can include "ventricular," "endocavitary," and "intracranial." These terms all describe something that is situated within the ventricles. It's important to understand these synonyms when reading medical journals or discussing treatment options with a healthcare professional. For instance, a physician might refer to an "intraventricular tumor" or "intracavitary chemotherapy" when discussing treatment options for a brain tumor that is located within the ventricles.