PSYB65H3 Chapter 14: Human Brain Damage
Document Summary
Tumors y tumor: mass of new and abnormal tissue that is not physiologically beneficial to its surrounding y environments aka neoplasms. Space occupying lesions: foreign objects that cause damage to the central nervous system by putting pressure on it and occupying space normally occupied by cns. Infiltrate: enter and destroy surrounding tissue y y encapsulated: stay in one area y benign: unlikely to reoccur y malignant: more likely to reoccur. Tumors arising from glial cells: gliomas: tumors that arise from glial cells y astrocytomas: tumors that arise from the growth of astrocytes; slow growth and rarely malignant; can infiltrate or be encapsulated. remove by surgery if accessible; if not chemotherapy y glioblastoma: grow quickly and highly malignant, infiltrate. use chemotherapy as they infiltrate making it hard to excise y medulloblastoma: (aka primitive neuroectodermal tumor) 2-6% of gliomas; highly malignant and infiltrating; close to brainstem so poor prognosis; use chemotherapy.
