What are the common sites of lung cancer metastasis? Many people are very afraid of lung cancer disease because the mortality rate of lung cancer disease is very high and the incidence rate is increasing, and if patients suffer from lung cancer disease, they need to suffer a lot of pain. So what are the common sites of lung cancer metastasis? Let’s learn about them together! 1.Brain metastasis of lung cancer If lung cancer disease is not controlled in time, it may lead to brain metastasis. The unexplained headache, vomiting, visual impairment and personality and temperament changes of lung cancer patients may be caused by intracranial hypertension or brain nerve damage caused by lung cancer metastasis to the brain. It is commonly seen in small cell lung cancer and adenocarcinoma types. Headache is the most common symptom, vomiting mostly occurs when the headache is intense, characterized by jet vomiting; visual impairment indicates that the tumor has affected the compression or invaded the optic nerve. In addition to the above common symptoms, lung cancer brain metastasis may also cause recurrence, paroxysmal black clouding, sudden collapse, impaired consciousness, increased blood pressure, slowed pulse, and in severe cases, brain herniation due to tumor compression may lead to respiratory arrest, endangering the patient’s life. In addition, due to the common application of brain CT examination for lung cancer patients in recent years, many patients with asymptomatic brain metastases have been detected, which has gained time for treatment. Therefore, brain CT should be included as routine examination for patients diagnosed with lung cancer to detect brain metastasis as early as possible. 2.Bone metastasis of lung cancer There are also many people who will develop bone metastasis, which will cause very great damage to our bones, so patients need timely treatment. About 50% of lung cancer patients will eventually develop bone metastasis in multiple locations. Bone metastases are usually asymptomatic in the early stage, and bone isotope scan can detect the lesioned bones. The symptoms of bone metastasis are related to the location and number of tumor metastases. For example, chest pain caused by lung cancer rib metastasis is mostly manifested as pain with limited chest wall area and clear pressure points. Spinal metastases cause pain in the middle of the back or at the lesion site, while bone metastases in the extremities or trunk cause limited pain in that area. Bone metastasis is not the direct cause of life threatening lung cancer patients, but if the tumor metastasizes to the weight-bearing bones of the body, such as cervical, thoracic and lumbar spine, it can cause serious consequences of paralysis. Therefore, patients with bone metastasis from lung cancer should be treated in time. Liver metastasis is also a common metastatic site of lung cancer. When lung cancer metastasizes to liver, liver pain will occur and patients need timely treatment. Liver is also a common metastatic site of lung cancer, and about 28-33% of lung cancers have liver metastasis. Liver metastasis is when cancer cells from primary lung cancer are shed and invade the liver through blood circulation and grow in the liver. Liver metastasis can be a single or multiple nodal metastases. The most common symptom is pain in the liver area, which is a persistent rising pain, and may be accompanied by loss of appetite, indigestion and other signs of impaired liver function. Kidney and adrenal metastases are the result of blood metastases in the late stage of lung cancer. About 17%-20% of lung cancer patients have kidney and adrenal metastases, which are often asymptomatic. 5.Metastasis to other parts of lung cancer In addition to the above common metastatic sites, the less common metastatic sites include metastasis to skin, subcutaneous tissue, muscle, abdominal cavity and heart, and the symptoms are often related to the metastatic sites. For example, metastasis to the heart may cause chest tightness, palpitation or even shortness of breath, syncope, heart rhythm disorder and other symptoms.