Early lung cancer can be asymptomatic, symptoms of peripheral tumors were less local, less than 10% of lung cancer patients with no obvious symptoms at diagnosis, with screening high-risk groups, the corresponding increase in the proportion of asymptomatic persons. Diagnosis of lung cancer the most common manifestations are as follows:
1. Cough often the first symptom, can be irritating cough or sputum with a small amount of straw liquid, cough can be high pitched and progressive increase. Past have chronic cough, cough nature of change should be cause for concern. Line anti-infection treatment can not be completely relieved. The main reason is due to tumor growth in the bronchi, the bronchial lumen to stimulate or block, causing intractable cough, with or without wheezing, chest tightness, shortness of breath and other symptoms.
2. Hemoptysis or bloody sputum fast as the growth of cancer blood supply, the growth process in the erosion of blood vessels cause bleeding easily. Normal and tumor blood vessel wall of the vessel wall endothelial gap increases, high permeability, but also easy bleeding.
3. Febrile cancer patient population; there are different degrees of fever, Penn mainly due to necrosis of the original network, and (or) secondary to pulmonary infection caused. As a result of tumor necrosis absorption of heat absorbed heat, said the tumor, most patients are generally lower than 38.5C fever, bronchial lumen is blocked because of the tumor, not easy to rule out the mucus, causing secondary obstructive pneumonia. Anti-infective treatment, symptoms can be partially mitigated, x-ray lung shadows Council; are partly absorbed, but will gradually increase the density of the shadow. And repeated infection symptoms appear.
4. Chest tightness, shortness of breath, difficulty breathing or secondary tumors of bronchial obstruction pericardial effusion, pleural effusion chest tightness, shortness of breath can occur. Severe breathing difficulties can occur.
5. About 30% of patients with chest pain can feel chest pain, dull pain or pain for the irregular. When a direct violation of the tumor pleura, ribs and chest wall can occur when the chest pain. If the tumor is located near the pleura, chest pain when breathing and coughing increased. Hand pain when pressing the increased involvement of the chest wall.
6. Weight loss is the high consumption of tumor disease, a minority of patients with no obvious incentive for weight loss as the first symptom, should pay attention to.
7. Dysphagia, hoarseness, or oppression of violations of esophageal cancer can cause dysphagia, swallowing discomfort. Violations of the recurrent laryngeal nerve, such as cancer can occur a hoarse voice.
The most common manifestation of lung cancer , 8. headache, dizziness mediastinal mass oppression of the superior vena cava, superior vena venous obstruction, can cause headache, dizziness. When the tumor cells into the brain, also can cause headaches and dizziness, can also be nausea, vomiting, unilateral limb weakness, blindness and other symptoms of cerebral space-occupying.