Lung cancer being the most fatal of all the cancers worldwide is regarded as one of the leading causes of death amongst both men and women in the U.S. it is the most universal form of cancer in men worldwide whereas, the fifth most common form of cancer in women.

In medical terminology, the malevolent transformation and expansion of lung tissues causes cancer in lungs, in simple words, the rapid growth of abnormal cells in the lungs leads to cancer which may start anywhere in the Lung and respiratory problems are destroying the healthy tissue and fell and the whole body suffers.

when examined under a microscope by a pathologist of lung cancer can be of two types, namely: '

O Small Cell Lung Cancer (SCLC): this type of cancer accounts for 20% of lung cancer with smoking a major cause of SCLC. O non-small cell lung cancer (NSCLC) NSCLC is responsible for 80% of lung cancers, their symptoms are those that. these includeSquamous cell carcinoma (also called epidermoid carcinoma), Large Cell Carcinoma, Adenocarcinoma and Squamous Cell Carcinoma.

Treatment of cancer (lung) varies as it is based on the exact location and the extent of spread. Usually, there are no definite signs or symptoms in the early stages, as they only occur later in the advance stages.

It is only on a routine chest X-ray or CT scan that cancer (in the lungs) in the form of coin lesions, is detected in its tumour form that looks like a coin. some of the symptoms of cancer (lung cancer) are:

or a persistent cough that gets worse with time or aggravation of an existing chronic cough or coughing blood or respiratory symptoms such as dyspnea accompanied by hoarseness and difficulty breathing chest pain or constant or repeated bouts of bronchitis or pneumonia or swelling of the face and neck or unexplained weight loss and / or fatigue

some other symptomswith late-stage cancer (lung) include:

o Headache, bone pain, aching joints, bleeding or blood clots,o Bone fractures not related to accidental injury,o Neurologic symptoms- unsteady walk and/or intervallic memory loss.

The numbers of deaths caused by cancer (in the lungs) are more as compared to the total number of deaths caused by colon, prostate, ovarian, lymph and breast cancers combined. about 85% of lung cancer cases are due to cigarette smoking. this is based on the correlation between the number of cigarettes smoked and the number of years of indulging in the vice. However, the risk of developing lung cancer can be reduced by quitting smoking, as 90% of lung cancer is due to tobacco use.

Apart from cigarette smoking, other causes of Cancer (in the lungs) are increase in pollution levels, radiation and asbestos exposure.

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