The clinical manifestations of brain metastases are more often associated with other parts of the body, such as brain tumor combined with lung metastases, not only headache, dizziness, nausea, vomiting, hemiplegia of limbs, speech dysfunction, seizures, etc., but more importantly, lung metastases may also show chest pain, as well as cough, sputum, blood in sputum, and chest tightness, breath-holding, and other more serious manifestations. serious manifestations. This is a relevant point of differentiation, that is, the discomfort reaction does not appear in one organ, but in all organs. For example, if brain metastases appear in the thoracic spine, the thoracic spine will produce certain pain, relatively limited activities, and sometimes even abnormal sensation in the lower limbs, all of which are manifestations of brain metastases, and must be judged according to the specific location of the metastases.