PSYB65H3 Chapter Notes - Chapter 14: Catamenial Epilepsy, Sleep Deprivation, Anticonvulsant
Document Summary
Tumours: mass of new and abnormal tissue that is not physiologically beneficial to its surrounding structures. Space-occupying lesions foreign objects that cause damage to the cns by putting pressure on it and occupying space that is normally occupied by the cns. Brain is common site for tumour growth, second to the uterus. Benign tumours not likely to recur, malignant ones are more likely to recur. Tumours arising from glial cells: most common are gliomas, astrocytomas tumours that arise from growth of astrocytes. Tend not to grow very quickly, rarely malignant. Other astrocytomas infiltrate the surrounding neural tissue. When surgical treatment is not practical, chemotherapy is typically used: glioblastoma. Infiltrate the surrounding tissues making it difficult to excise surgically without removing relatively healthy surrounding neural tissue. Location and nature of these tumours makes chemotherapy popular. Secondary tumours that form from migrated tumour tissue.
