Retrocranial fossa hematoma

Posterior cranial fossa hematoma is relatively rare. Due to the small volume of the posterior fossa, it is the channel through which the cerebrospinal fluid flows into the subarachnoid space through the fourth ventricle, and there is an important life center medulla interposed therebetween. It can cause cerebellar tonsil hernia. Cerebellar tonsil or hematoma can directly or indirectly compress the medullary bulb and cause central respiratory and circulatory failure. Therefore, the condition is more urgent and dangerous. Early surgery should be performed to clear the hematoma, rescue the brain hernia, and save patients' lives. Posterior cranial fossa hematoma can be divided into acute, subacute, and chronic hematomas in time, and there are also four types of epidural hematoma, subdural hematoma, cerebellar hematoma, and multiple hematoma at the site. Usually because of different bleeding sources and speeds, and the severity of brain damage varies, clinical manifestations also vary. Acute hematoma refers to those who have increased intracranial pressure and cerebellum and / or brain stem compression symptoms within 3 days after injury; subacute hematomas who have symptoms from 4 to 21 days after injury; chronic hematomas who have symptoms more than 22 days By.