Patient’s question: Examination and laboratory tests: On December 17, 2012, my child was found to have a small seizure with aphasic epilepsy, the seizure usually lasted about 10 seconds and everything else was normal. The enhancement was not obvious, no abnormal signal foci were seen in the remaining brain parenchyma, the gray and white matter was clearly defined, the brain sulcus, brain fissure, brain pool, and ventricles were normal in size and shape, and the midline structures were not displaced. Treatment: Craniotomy was performed on January 5, 2013, and the operation went well. The symptoms disappeared after the operation, and the antiepileptic drugs were taken for 5 months after the operation. At present, the child is living a completely normal life without taking any medication. Medical history: born in September 2007, cured of a viral cold at 8 months of age, cured of hand, foot and mouth in July 2010, preoperative diagnosis of malignant glioma grade 2, postoperative pathological analysis is a low-grade glioma in the left frontal lobe, tends to be a hairy cell astrocytoma, if it is a hairy cell astrocytoma is benign there is a 90% chance I would like to ask my son if this is a malignant brain tumor or a benign one. Doctor’s reply: The World Health Organization classifies gliomas as grades 1-4, and the malignancy of the tumor increases with the grade. We are used to classify people into good and bad people, and we are also used to classify things into good and bad things, such good and bad (good and bad) are subjective, and the same person or the same thing has different judgment results due to different personal judgment standards. However, medicine is a science and has objective evaluation criteria. The simple distinction between good and bad is not applicable to the objective evaluation of different grades of glioma. The hairy cell astrocytoma you mentioned is mostly WHO grade 1, which can be interpreted as benign tumor biology, that is, the tumor growth rate is slow, the possibility of recurrence is small in the short term, and radiotherapy can consolidate the therapeutic effect. However, the degree of malignancy of tumor is not fixed, and there are a few reports of recurrence due to increased malignancy of tumor in the past. Personal suggestions: 1. relax and enjoy a good life; 2. understand the disease objectively and perform post-operative radiotherapy to consolidate the efficacy; 3. review the head MR scan + enhancement regularly for specialist treatment.