It must be said that the specific symptoms that are characteristic for lung tumors does not exist. All manifestations of lung cancer due to location, size, degree of tumor spread, the general reaction to the neoplastic process and its complications, and concomitant diseases of respiratory and cardiovascular systems.
In the development of tumor can be divided into three periods. This is a precancer preclinical lung cancer and with clinical manifestations.
Precancer state in the form of pockets of developmental disorders of bronchial epithelium can last for years, sometimes even without going to proper cell lung cancer. From the appearance of the tumor to the manifestation of symptoms is sometimes a lot of time – from 4 to 12 years depending on the type of tumor.
Clinical symptoms is largely determined by clinical and anatomical shape and location of the tumor. Distinguish central lung cancer that develops from the epithelium of large bronchi (the main, intermediate, equity, and segmental subsegmentarnogo) and peripheral lung cancer originating from the epithelium of peripheral small bronchi or alveoli, ie, the lung tissue. The right lung is affected more often than the left, the top share of more than lower ones.
Central lung cancer
Cough is one of the first symptoms of central lung cancer. At first, the cough may be dry, transient, then constant, reaching up to hacking. Over time, there is mucous or muco-purulent expectoration. Termination of the cough may indicate that there was a complete blockage of the bronchus. Hemoptysis in central lung cancer is an important symptom.
One early symptom is shortness of breath. The severity of breathlessness to a great extent depends on the caliber of the affected bronchus, at least – from the tightness of large vessels lung and mediastinum, from the pleural effusion.
Chest pain appears mainly on the affected side, but may be on the opposite side.
Many patients have fever. This symptom is associated with delayed infection and sputum, as well as intoxication decay products of the tumor. Temperature reaction can last from several days to several weeks or even months.
Often the central lung cancer can masquerade as acute pneumonia, which initially stopped by anti-inflammatory therapy. But with prolonged or recurrent pneumonia in men older than 45 years of age and smoking should be suspected lung cancer.
Peripheral lung cancer
Manifestations in this form of cancer scarce. If the tumor is small size and is asymptomatic, it accidentally discover, when x-ray screenings. In marked tumor growth or metastasis of the clinical symptoms appear. Upon germination of the tumor in the pleura and chest wall, pain, which intensified during respiration.
Of late symptoms – cough, which appears at germination tumors in a large bronchus. But more characteristic of peripheral cancers spread of the tumor on the pleura (pleural carcinomatosis). With the formation of pleural effusion, which is accompanied by shortness of breath. Signs of inflammation – a cough with purulent sputum, hemoptysis, fever – are observed in the decay of the tumor.
For the apical lung cancer is characterized by the following picture: the omission of the upper eyelid, retraction of the eyeball, contraction of the pupil and plexitis (neuralgia).
Common symptoms of lung cancer patients: fatigue, weight loss, decreased performance, fatigue, decreased appetite, fever and others.
Often long before the detection of primary tumors appear syndromes that are associated with the activity of the tumor. The most common manifestations of these syndromes are changes in the fingers, which are similar to the drum sticks, as well as arthritis of small joints, itchy skin, toxic and allergic dermatitis and others. Typical is the fact that these symptoms disappear after treatment of tumors.
When running forms of lung cancer clinical picture becomes more pronounced as complications develop. Patients appear aching pain, change voice, swallowing difficult. Patients were tortured fever, shortness of breath, increased fatigue and general weakness.
At this stage the diagnosis is much easier, but the diagnosis is already too late and time for the treatment of late.