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Wednesday, July 11, 2007

Lung Cancer

Lung Cancer is one of killer disease. Lung cancer is the uncontrolled growth of abnormal cells in one or both of the lungs, usually in the cells lining air passages. Lumps of cancer cells (tumors) then form and disrupt the lung, making it difficult to function properly.

Types of Lung cancer are :

1. Non-small cell lung cancer (NSCLC)
This types are are grouped together because their prognosis and management are roughly identical. Non-small cell lung cancer accounts for about 80 percent of lung cancers with subtypes :
  • Epidermold carcinoma (also called squamous cell carcinoma) forms in the lining of the bronchial tubes. This kind is the most prevalent type of lung cancer in men.

  • Adenocarcinoma is found in the mucus glands of the lungs, the most common subtype of NSCLC. This is the most common type of lung cancer in women and among people who have not smoked.

  • Bronchioalveolar carcinoma is subtype of adenocarcinoma, forms near the lungs’ air sacs. bronchioloalveolar carcinoma is more common in female never-smokers, and may have different responses to treatment.

  • Large-cell undifferentiated carcinomas, form near the surface of the lungs.

  • 2. Small cell lung cancer (SCLC)
    Small cell lung cancer accounts for 20 percent of all lung cancers. Although the cells are small, but they grows rapidly becoming quite large.

    Sign and Symptom of Lung Cancer :

    Signs and symptoms of lung cancer may take years to appear and may not appear until the disease reaches an advanced stage. Symptoms of lung cancer are varied dependent upon where and how wide-spread the tumor is. Symptoms that suggest lung cancer include:
    - dyspnea (shortness of breath)
    - hemoptysis (coughing up blood)
    - chronic coughing or change in regular coughing pattern
    - wheezing
    - chest pain or pain in the abdomen
    - cachexia (weight loss), fatigue and loss of appetite
    - dysphonia (hoarse voice)
    - clubbing of the fingernails (uncommon)
    - difficulty swallowing

    Lung cancer is most common cause by Carcinogens such as those in tobacco smoke, Radiation exposure, Genetic susceptibility, Viral infection.


    Lung Cancer Treatment :

    Treatment for lung cancer depends on the cancer's type and how far it has spread, also look at the patient's performance status. Common treatments for lung cancer are include surgery, chemotherapy, and radiation therapy.

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