Question

question 54 (1 point) jeremy was told that his leukemia could not be treated with radiotherapy and must be treated with chemotherapy. this is probably because the cancer is a) in remission. b) advanced. c) not localized. d) in situ.

Explanation:

Radiotherapy is typically used for localized cancers as it targets a specific area. Chemotherapy, on the other hand, circulates throughout the body via the bloodstream. Leukemia (a cancer of blood - forming tissues) often involves cancer cells that are not localized (spread throughout the blood and bone marrow). If the cancer is not localized, radiotherapy (which is local) is not effective, and chemotherapy (systemic treatment) is a better option.

• Option A: If the cancer was in remission, treatment might be paused or different maintenance treatments could be considered, not necessarily chemotherapy over radiotherapy based on remission status alone.
• Option B: While advanced cancer can be more complex, the key differentiator between radiotherapy and chemotherapy here is the localization of the cancer. Advanced cancer could still potentially have a localized component that radiotherapy could target if that was the case.
• Option D: In - situ cancer is a very early stage where cancer cells are still confined to the original site. Radiotherapy could be a viable option for in - situ cancer in some cases (if it was a solid tumor in - situ), but leukemia is not typically in - situ in the traditional sense (as it involves blood - forming cells).

Answer:

C. not localized.