Shortness of breath
Almost all lung cancer patients who develop regional spread have shortness of breath in different degrees. Normal tissue fluid produced by the lungs and heart muscle is returned by lymph nodes in the middle of the chest. If these lymph nodes are obstructed by the tumor, this tissue fluid will accumulate in the pericardium to form a pericardial effusion or in the chest cavity to form a pleural effusion. Both of these conditions can lead to shortness of breath. As part of lung tissue loses its respiratory function due to tumor, the positive respiratory function is impaired, resulting in respiratory discomfort, which at first only occurs when exercising, but eventually can be felt even when resting.4. Metastasis of Lung Cancer
The common sites of hematological metastasis of lung cancer are, in order of priority, bone, liver, brain, kidney, adrenal glands, and subcutaneous tissues, etc. Also, intraparenchymal metastases of lung cancer are more common. Clinical symptoms and signs are different with different sites of metastasis
Lung cancer metastasis can be characterized by a variety of symptoms and signs.