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1.8 million (2020) [3] Lung cancer, also known as lung carcinoma, is a malignant tumor that begins in the lung. Lung cancer is caused by genetic damage to the DNA of cells in the airways, often caused by cigarette smoking or inhaling damaging chemicals. Damaged airway cells gain the ability to multiply unchecked, causing the growth of a tumor.
Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. [ 2 ][ 7 ] These contrast with benign tumors, which do not spread. [ 7 ] Possible signs and symptoms include a lump, abnormal bleeding, prolonged cough, unexplained weight loss, and a change in bowel movements. [ 1 ]
Oncology. Adenocarcinoma of the lung is the most common type of lung cancer, and like other forms of lung cancer, it is characterized by distinct cellular and molecular features. [1] It is classified as one of several non-small cell lung cancers (NSCLC), to distinguish it from small cell lung cancer which has a different behavior and prognosis.
3. The strong link between alcohol and cancer. After cigarette smoking and excess body weight, the AACR ranks alcohol consumption the third leading risk factor for preventable cancers. And the ...
Cancer requires multiple mutations to progress. Cancer is caused by genetic changes leading to uncontrolled cell growth and tumor formation. The basic cause of sporadic (non-familial) cancers is DNA damage and genomic instability. [ 1 ][ 2 ] A minority of cancers are due to inherited genetic mutations. [ 3 ]
Smoking tobacco causes various types and subtypes of cancers [94] (particularly lung cancer, cancers of the oropharynx, [95] larynx, [95] and mouth, [95] esophageal and pancreatic cancer). [18] Using tobacco, especially together with alcohol , is a major risk factor for head and neck cancer . 72% of head and neck cancer cases are caused by ...
In addition to smoking and excess body weight, excessive alcohol intake is another important risk factor, with 5.4% of all cancers in attributable to alcohol use, according to the latest available ...
The report's conclusions were almost entirely focused on the negative health effects of cigarette smoking. It found: cigarette smokers had a seventy percent increase in age-corrected mortality rate. cigarette smoke was the primary cause of chronic bronchitis. a correlation between smoking, emphysema, and heart disease.