Radiation necrosis, a focal structural lesion that usually occurs at the original tumor site, is a potential long-term central nervous system (CNS) complication of radiotherapy or radiosurgery. Edema and the presence of tumor render the CNS parenchyma in the tumor bed more susceptible to radiation necrosis. Radiation necrosis can occur when radiotherapy is used to treat primary CNS tumors, metastatic disease, or head and neck malignancies. It can occur secondary to any form of radiotherapy modality or regimen.
A biologic drug (biologics) is a product that is produced from living organisms or contain components of living organisms. They include a wide variety of products derived from human, animal, or microorganisms by using biotechnology.
The correct answer is B. Hope this helps you.
Before positive psychology, psychology mainly focused on Mental Illnesses. The initiators of the positive psychology believed that the need of focusing on other aspects of psychology is important in order to live a normal life. Because of this, they created positive psychology and its branches in order to help people understand how to make their life worth living.
Answer:
depression hope this helped