Intro to Radiation Therapy questions with correct answers

Well differentiated - Answer : tumor cells resemble cells of origin Anaplastic/undifferentiated - Answer cells do not resemble cells of origin, classification is difficult Carcinoma: - Answer arise from epithelium, (the tissue that covers surfaces or lines body cavities), and spread through the lymphatic system. Sarcomas: - Answer arise from mesenchymal cells, (make up connective tissue such as cartilage and bone), and spread through the blood vessels Etiology - Answer the study of the causes of disease Epidemiology - Answer The study of disease incidence (defining the distribution and determinants causing disease and injury in human populations). Patterns of cancer occurrence and death rates, factors: age, race, gender, location Screening - Answer selecting appropriate tests and studies to check for disease. Tumor staging: - Answer : a means of defining the tumor size and extension at the time of diagnosis. Helps with: communication about tumors, determine best treatment, predicting diagnosis, and continuing research. TNM: - Answer most common method to classify stage of tumor and used by the UICC and AJCC