As you may have noticed, above you will find words for "A rare form of ependymal tumor. They are classically found within the fourth ventricle, typically have a well demarcated interface to normal tissue and (unlike ependymomas) do not usually extend into the brain parenchyma.". Hover the mouse over the word you'd like to know more about to view its definition. Click to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.