Pulmonary metastasis of breast cancer multi-channel due to the formation of blood circulation. With the breast cancer cells into the venous vein blood flow, flow through the lungs, capillaries in the lungs to stay and grow, and then penetrate the vessel wall into the lung tissue to form lung cancer metastasis.
Does not directly infringe because of metastatic carcinoma of the lung airway epithelial, it is often different from the primary clinical manifestations of lung cancer, in the transfer of more than the early non-clinical symptoms and signs. Most patients only during routine chest X-ray film inspection, he discovered that in a number of hair the size of lung nodules ranging from the shadow of simultaneous lesions in lungs more common. Clinically, the exclusion of other infectious disease cases, with the performance of the primary tumor of breast cancer can be diagnosed.
Late pulmonary metastasis of breast cancer often violated pleura, can produce chest pain and pleural effusion; violations of pulmonary large bronchi, can produce symptoms such as cough or sputum with blood; violation of hilar or mediastinal lymph nodes, it can cause respiratory depression, eating there stop symptoms of flu and other oppressed; a small number of patients with recurrent laryngeal cancer may be oppression, there hoarse voice. A small number of cases of cancer can also occur lymphangitis, manifested clinically significant cough, shortness of breath, cyanosis, early X-no abnormality or only increased lung markings, care should be compared with the identification of interstitial pneumonia in order to avoid misdiagnosis.
