What are the ways lung cancer metastasizes

In recent years, lung cancer has become one of the major diseases that endangers society and human health, and has brought great pain and distress to humans. However, many people do not realize that lung cancer has become the number one killer of cancer. Next, let us learn about the four ways in which lung cancer metastasizes:

1. Direct spread: The tumor continues to grow and may block the bronchial lumen, while also expanding into the lung tissue outside the bronchus. Tumors near the periphery of the lung may invade the pleura and chest wall, while central tumors or tumors near the mediastinum may invade the pleura and chest wall, and central tumors or tumors near the mediastinum may invade other organs. Huge tumors may cause ischemic necrosis in the central part, forming a cancerous cavity.

2. Hematogenous metastasis is a late manifestation of lung cancer. After the cancer cells return to the left heart through the pulmonary veins, they can metastasize to any part of the body. Common metastatic sites are the liver, brain, lungs, bone system, adrenal glands, kidneys and pancreas.

3. In cases of intrabronchial dissemination of alveolar cell carcinoma, cancer cells on the walls of bronchioles and alveoli can easily fall off; cancer cells can spread through the bronchial ducts to the adjacent lung tissues, forming new cancer foci.

4. Lymphatic metastasis The lymphatic drainage of the lung has a certain pattern. The right upper lobe flows to the right hilum and right upper mediastinal lymph nodes. The right middle lobe flows to the middle and lower lobe aggregation lymph nodes, the subcarinal process and the right upper mediastinal lymph nodes. The right lower lobe is drained to the middle and lower lobe aggregation area, the subcarinal process, the lower pulmonary ligament and the right upper mediastinal lymph nodes. The left upper lobe is drained to the subaortic arch (Bottallo) lymph nodes and the left anterior superior mediastinal lymph nodes. The left lower lobe lymph flows to the upper and lower lobe aggregation area, the subcarinal process and across the mediastinum to the right upper mediastinal lymph nodes.

The above is the way lung cancer metastasizes that I introduced to you. I hope you will pay attention to it. We must start from the little things in our daily life to prevent the occurrence of cancer. Once abnormal symptoms are found, you should go to the hospital in time to avoid delaying the disease. If you have other questions, please consult our online doctor for answers. Feihua Health Network wishes you good health!

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