Patient: On November 15, 2009, the car was hit while driving at high speed, and the insurance rope was accumulated at that time. However, the right front of the head hit the window twice and swelled up. The neck was also strained, but there was no bleeding. Now the head lump has not disappeared and is still very large, the head is sometimes a little dizzy and the blood clot is painful to the touch, the neck is also painful, not too serious Can there be a delayed cerebral hemorrhage? It is said that some brain diseases are related to past head impacts, so how should we prevent this from happening? How much time is the best time to go for examination and what kind of examination is good Laboratory and examination results: No abnormality in CT, middle brain line centered Last hospital visit: Shanghai Eighth People’s Hospital Yu Guangjie, Western Neurosurgery Department, Qingdao Hai Ci Hospital: The “head mass” may be a scalp hematoma. Scalp hematoma usually absorbs on its own and usually does not need to be treated, but in larger hematomas, the absorption time may be long and there is a possibility of infection in the hematoma cavity, and it is best to remove some or most of the blood from the hematoma cavity to speed up the absorption of the hematoma. There are two general types of “delayed hematomas”: one is a delayed intracerebral hematoma, which usually occurs within a few days after the injury. The other is the “chronic subdural hematoma” which occurs between 3 weeks and 3 months after the injury, and rarely after 6 months. Late onset hematomas inevitably lead to symptoms of varying degrees of severity, such as progressively worse headaches or gradual weakness of one limb. These symptoms should be examined by a doctor promptly, and there is no fixed time for review during this period. Patient: Thank you, Dr. Yu: Your reply is very important to my family, and we will pay attention to it in time. There is one more problem, we have always had concerns, and that is the chronic subdural hemorrhage you mentioned. The doctor at the hospital said that and that the head was dropped related, maybe the child can not express, delayed treatment,,, there are also some we also heard about, after more than ten years to find out. This may be an eventuality, but it is a 100% tragedy when it falls on us as individuals. So we would also like to know more about this and go to the hospital immediately if there are symptoms that are not right, and whether such vigilance should be maintained for more than a few years. Thank you again o our reply okay? Yu Guangjie, Western Neurosurgery Department, Qingdao Hai Ci Hospital: It is too rare to have symptoms of bleeding several years after traumatic brain injury. I have not heard of it and have not found it documented. However, patients with hemorrhagic symptoms more than 3 weeks after injury are chronic hematomas. One characteristic they all have in common is slow progression. That is, as long as they are not overly careless, they all have a chance to be treated and should not suffer death or serious sequelae. Patient: Thank you, Dr. Yu: You have allayed my family’s concerns and made us more alert. We will not be careless and will go to the doctor if we have symptoms, but we will not be apprehensive. We also feel close.