In recent years, news has been common about family tragedies caused by lung cancer. According to the 2019 "China Malignant Tumor Epidemic Analysis Report", in 2015, the incidence of malignant tumors in China was about 3.929 million, of which the new lung cancer cases accounted for about 787,000 cases; the "China Young and Middle-aged Cancer Prevention Science Report" also pointed out that the number of cancer patients aged between 20-39 years old has increased.
As the first malignant tumor in China, lung cancer has always been the "number one killer" that seriously threatens human health, and the affected group is still gradually getting younger. This also makes the public smell of lung cancer discolored, many people can not help but ask: why lung cancer is often found to be advanced, is there no symptoms in the early stage of the disease?
Unfortunately, when lung cancer is in its early stages, the vast majority of patients have no symptoms.
When the body feels uncomfortable, indicating that the lesion has affected the surrounding tissues, or the presence of the lesion affects the normal function of other organs, then some symptoms will appear, such as the following 4 types:
1. The lesion is inside the lung tissue, and there is basically no pain. If the lesion involves the pleura and chest wall, chest pain will occur;
2. If the lesion causes the lymph nodes to compress the peripheral nerves, such as the diaphragm of the diaphragm, the patient may experience diaphragmatic paralysis and feel shortness of breath when breathing;
3. If the lesion involves the recurrent laryngeal nerve, the patient's swallowing may be affected, and symptoms such as drinking water choking cough and hoarseness will occur;
4. If the airway is affected, it may cause hemoptysis, or frequent coughing.
In addition, if the lesion grows to a certain volume, or appears in the part where it should not appear, such as transferring to the skull and liver, headache, liver pain, or ascites, jaundice and other corresponding symptoms will appear.
Therefore, in order to rule out the possibility of disease, it is recommended to add chest CT to the routine physical examination, because chest x-ray alone cannot detect early lung cancer.