Which of the following is NOT a common treatment for lymphoma?

In the context of lymphoma treatment, observation only is not a common approach when active intervention is necessary. Lymphoma, which is a type of cancer that affects the lymphatic system, generally requires some form of treatment rather than merely monitoring the condition.

While observation may be suitable in specific cases, such as for indolent lymphomas where patients are asymptomatic and the disease is not progressing significantly, it is not regarded as a standard treatment strategy across all types of lymphoma. Most patients benefit from proactive treatments, which can include therapies like radiation, chemotherapy, and in some cases, bone marrow transplants, depending on the type and stage of the lymphoma.

Radiation therapy is often employed to target localized areas of lymphoma, chemotherapy utilizes systemic drugs to eradicate cancer cells throughout the body, and bone marrow transplants are used to replace damaged or diseased bone marrow with healthy cells, particularly in more aggressive or relapsed lymphomas. Therefore, while observation may have its place in select situations, it does not constitute standard treatment compared to the more active therapies typically utilized for managing lymphoma.