What does the local TI short signal in the posterior lobe of the pituitary gland mean in a 10-year-old child? What could possibly be causing it?

My child was hospitalized due to febrile convulsions before he was 7 years old. His body temperature was measured at 38.7 degrees at that time. During hospitalization, no abnormalities were found in CT, EEG and other examinations. This time I went to Xijing Hospital for a checkup because I had begun to show signs of growth (body hair started to grow). The hormone levels, alpha-fetoprotein, and villus coefficient were all within normal values. The X-ray showed that my bone age was about 13 years old, and the MRI The results showed that there was local T1 short signal in the posterior lobe of the pituitary gland, and there were no abnormalities in the size of the pituitary gland or other abnormalities. You replied that it should be fat. I understand that it is caused by the child being overweight. Can you just ignore it and let it get better when you grow up? And in a situation like his, what should I do in daily care in the future? What to pay attention to? Because I am still very worried! Thank you, I hope you can take time out of your busy schedule to reply! An anxious mother