The chemotherapy for malignant lymphoma, I personally don't think is very painful.

Actually, lymphoma treatment nowadays not only includes chemotherapy but also targeted therapy and immunotherapy, so it is not very painful. Moreover, generally speaking, the common side effects of chemotherapy include nausea, vomiting, fatigue, poor spirit, constipation, or diarrhea. In clinical practice, these symptoms can be controlled by using antiemetic, hepatoprotective, gastric protective, and cardioprotective drugs. Of course, another common side effect of lymphoma chemotherapy is bone marrow suppression, which can cause a decrease in white blood cells and platelets. However, if there is only a mild decrease, we can restore these levels with oral medication to increase white blood cells or injections to increase white blood cells and platelets. If the suppression is very severe, it could potentially be life-threatening. But strictly speaking, more than 95% of patients can tolerate chemotherapy.