Uninterrupted progress of the carcinoma narrows or constricts your airway. Much like asthma, you experience wheezing attributable to airway obstructions. Inhaling and exhaling becomes harder, an actual effort, even painful.

Continued development of the cancerous tumors allow their influence to develop beyond the lungs to contact or push on new organs and nerves. When this happens you will feel pains in your chest, your back, even your shoulders and arms. Nerves in such places may tingle or feel pain because of the pressure of the tumor.

The cancerous tumors will damage all areas of the lung and permit infections to easily damage lung tissue. You may have frequent and repetitive infections including pneumonia and bronchitis.

Lung cancers may spread to additional areas of your body before any noticeable symptom of lung cancer 肺癌成因 shows up. Usual locations for a lung cancer to spread (metastasize) are the liver, adrenal glands, the bones, as well as your brain.