Pulmonary heart disease is not cancer. Pulmonary heart disease is short for pulmonary heart disease, which can be caused by a variety of reasons, such as long-term chronic obstructive pulmonary disease can lead to pulmonary heart disease, long-term poorly controlled asthma can lead to pulmonary heart disease, other lung diseases can also lead to pulmonary heart disease, and pulmonary heart disease caused by diseases of unknown origin, that is, many causes can lead to pulmonary heart disease. The initial symptoms of pulmonary heart disease are atypical, or only chest tightness, breath-holding or early symptoms of heart failure. As the disease progresses, heart failure, malignant arrhythmia and shock can occur. Cancer is a malignant disease that can be seen in all systems of the human body, such as stomach cancer and intestinal cancer in the digestive system, various lymphomas or blood tumors in the hematological system, and also in the respiratory system, such as lung cancer, etc. These two diseases are different and should not be confused with each other.