Whether thymoma with moderate enhancement is serious or not, it is still mainly combined with the condition of thymoma itself for comprehensive judgment. 1. Some thymoma itself does not have obvious clinical symptoms, the volume is relatively small, and there is no invasion of the surrounding tissues, through radical surgical resection, a large portion of the tumor can be clinically cured, which is not a particularly serious condition. 2. Thymoma itself has obvious myasthenia gravis, the tumor volume is relatively large, causing invasion of mediastinal peripheral tissues, it is not easy to cut cleanly after surgery, and it is prone to recurrence, which is a more serious type. If thymoma is found to be accompanied by obvious cough, chest pain, muscle weakness and other symptoms, it is necessary to consult a doctor in time for observation, diagnose the condition through clinical examination, and carry out standardized treatment under the guidance of clinicians to avoid delaying the condition.