What are the symptoms of lung cancer? Specific symptoms of lung cancer

The early symptoms of lung cancer are relatively hidden, and it is not easy for us to find them. Therefore, as long as we know more about the basic knowledge of lung cancer, we can effectively avoid lung cancer from happening to us. Especially what are the symptoms of lung cancer? The following experts will take you to see what the symptoms of lung cancer are. There are no obvious symptoms in the early stage. Almost 2/3 of lung cancer patients are in the late stage (stage III or IV) when they are treated. 95% of patients can have clinical examination results. Primary tumors, metastatic tumors, systemic symptoms or tumor-associated symptoms can all be the patient's first symptoms. The first symptoms caused by primary tumors account for 27%. The symptoms are related to the location of the primary tumor. Central lung cancer manifests as irritating dry cough, breathlessness, repeated pneumonia in the same location, hemoptysis or asthma, recurrent laryngeal nerve, phrenic nerve compression symptoms or superior vena cava compression syndrome. Peripheral tumors are more common in chest pain, breathlessness or pleural effusion and other symptoms. Large peripheral lesions, central necrosis, cavitation eventually appear similar to lung abscesses. Common symptoms of primary lung cancer are grouped. Distant metastatic lesions cause the first symptoms in 32% of cases. Common distant metastatic sites include: lymph nodes, adrenal glands, liver, bones, lungs, brain and chest wall, which produce some corresponding symptoms, indicating that lung cancer has reached the late stage, such as: tumors near the mediastinum can invade the phrenic nerve, causing ipsilateral diaphragm paralysis, and under fluoroscopy, the diaphragm position is elevated and abnormal respiratory movements are shown; invade the ipsilateral recurrent laryngeal nerve, causing hoarseness, ipsilateral vocal cord paralysis and fixation in the median position; compress the superior vena cava, causing edema of the head, face and upper limbs, and venous distension; invade the pleura, causing a large amount of blood in the pleural cavity. Fluid accumulation, aggravating the symptoms of shortness of breath, or directly invading the chest wall, causing severe chest pain; lung cancer at the apex of the upper lobe is located at the entrance of the thorax, also known as superior pulmonary sulcus cancer, which can invade and compress the brachial plexus, cervical sympathetic ganglia, and subclavian arteries and veins, producing a series of special symptoms, such as numbness and pain in the ipsilateral upper limb, which gradually increases and becomes difficult to tolerate; atrophic changes in muscles and skin, distension and edema of the upper limb veins; and cervical sympathetic nerve syndrome such as ptosis of the upper eyelid, miosis of the pupil, enophthalmos, and anhidrosis on the face on the same side. 10% to 20% of lung cancer patients have tumor-associated syndromes. The most common symptoms are small cell lung cancer and squamous cell carcinoma. Common tumor-associated syndromes include: pulmonary osteoarthritis syndrome (clubbing, bone and joint swelling and pain, periosteal hyperplasia, etc.), SIADH (syndrome of inappropriate antidiuretic hormone secretion), hypercalcemia, etc., as well as Cushing's syndrome, myasthenia gravis or male breast enlargement. About 16% of patients have neuromuscular symptoms, and some patients have skin diseases such as scleroderma and acanthosis nigricans. The clinical manifestations of lung cancer are closely related to the location, size, compression, invasion of adjacent organs, and metastasis of the tumor. Tumors grow in larger bronchi, often causing irritating coughs. The enlargement of the tumor affects bronchial drainage. When secondary lung infections occur, there may be purulent sputum. Another common symptom is bloody sputum, usually with blood spots, blood threads, or intermittent hemoptysis. Even if some patients have bloody sputum once or twice, it is also of great reference value for diagnosis. Some patients may experience chest tightness, shortness of breath, fever, and chest pain due to larger bronchial obstruction caused by tumors. Do you have some understanding of the symptoms of lung cancer after reading the above introduction? In life, we should not only understand the symptoms of lung cancer, but also know a little about other manifestations of lung cancer, so as to effectively prevent lung cancer from happening to us and prevent us from being invaded by lung cancer. I hope this will attract everyone's attention!