Knee joint pain of lung cancer may be caused by metastasis of lung cancer to bone and joint in late stage, or it may not be related to lung cancer itself, which is caused by strenuous exercise or trauma, knee arthritis and other diseases.
Typical symptoms of lung cancer patients are cough, blood in sputum, chest pain, etc., which usually do not cause knee joint pain. However, if the disease develops into advanced stage and the cancer cells metastasize to the knee joint, it will cause local pain.
If in the early stage of lung cancer, knee joint pain occurs, consider that it is not related to lung cancer as a disease. If the patient has recently exercised strenuously or overworked, it is considered to induce knee joint pain. If trauma is suffered during exercise, it may also lead to localized pain and swelling. In addition, it may also be caused by knee arthritis, in which patients will experience localized pain and swelling as well as impaired movement.
There are more causes of knee joint pain in lung cancer, and patients are recommended to seek medical examination for clear diagnosis.