Patient Xiao Zhang asked, "Dr. Li, could you please take a look at my case? Is it possible for me to avoid radiotherapy?" Upon reviewing her pathological report, it showed lung adenocarcinoma with 80% acinar type and 20% lepidic type. The maximum tumor diameter was 1.5 cm, with evidence of airspace spread and lymph node metastasis. The hospital had recommended a treatment plan of 4 cycles of chemotherapy and 25 sessions of radiotherapy. I found this plan quite reasonable and asked her, "Why are you hesitant about radiotherapy?" She expressed fear of developing radiation pneumonitis, a concern many patients share. In reality, radiotherapy does not necessarily lead to radiation pneumonitis. During the treatment, doctors strictly control factors such as the radiation method, dosage, area, and speed, all of which follow established guidelines. Therefore, there is no need to worry excessively about this issue. The occurrence of radiation pneumonitis is not solely related to radiotherapy itself but also depends on factors such as whether the patient contracts a cold during treatment, has a history of chronic lung disease, or their overall physical condition. Hence, it is essential to actively cooperate with the doctor during radiotherapy and focus on improving the body's immunity.