What is CSF dissemination and can it be stopped? Does it only occur in malignant brain tumors? If not, what kinds does this occur in?

CSF spread of tumor. Tumor spread by the cerebrospinal fluid due to the circulation of CSF is called CSF dissemination it may be spread into: 1. The subarachnoid space into the spine or other parts of the brain or 2. To other cavities by virtue of a ventriculoperitoneal shunt.