Lung Cancer

Anti-smoking commercials burn out over time

The massive, federally funded anti-smoking campaign "Tips From Former Smokers"—"Tips" for short—fizzled more than it popped. That's the conclusion behind research published this week in the American Journal of Preventive ...

May 19, 2015
popularity22 comments 0

Smoking induces early signs of cancer in cheek swabs

DNA damage caused by smoking can be detected in cheek swabs, finds research published today in JAMA Oncology. The study provides evidence that smoking induces a general cancer program that is also present in cancers which ...

May 14, 2015
popularity26 comments 0

The key to stopping sarcomas' spread

When sarcomas become large enough and outgrow their blood supply, they become vulnerable to hypoxia—a lack of oxygen. That adaptation not only enables them to survive the stress of low oxygen—it also enables them to withstand ...

May 12, 2015
popularity5 comments 0

Lung cancer is a disease characterized by uncontrolled cell growth in tissues of the lung. If left untreated, this growth can spread beyond the lung in a process called metastasis into nearby tissue and, eventually, into other parts of the body. Most cancers that start in lung, known as primary lung cancers, are carcinomas that derive from epithelial cells. Worldwide, lung cancer is the most common cause of cancer-related death in men and women, and is responsible for 1.3 million deaths annually, as of 2004. The most common symptoms are shortness of breath, coughing (including coughing up blood), and weight loss.

The main types of lung cancer are small-cell lung cancer (SCLC), also called oat cell cancer, and non-small-cell lung cancer (NSCLC). The most common cause of lung cancer is long-term exposure to tobacco smoke. Nonsmokers account for 15% of lung cancer cases, and these cases are often attributed to a combination of genetic factors, radon gas, asbestos, and air pollution including secondhand smoke.

Lung cancer may be seen on chest radiograph and computed tomography (CT scan). The diagnosis is confirmed with a biopsy. This is usually performed by bronchoscopy or CT-guided biopsy. Treatment and prognosis depend on the histological type of cancer, the stage (degree of spread), and the patient's general wellbeing, measured by performance status. Common treatments include surgery, chemotherapy, and radiotherapy. NSCLC is sometimes treated with surgery, whereas SCLC usually responds better to chemotherapy and radiation therapy. This is partly because SCLC often spreads quite early, and these treatments are generally better at getting to cancer cells that have spread to other parts of the body.

Survival depends on stage, overall health, and other factors, but overall 14% of people in the United States diagnosed with lung cancer survive five years after the diagnosis.

This text uses material from Wikipedia licensed under CC BY-SA

Latest Spotlight News

Blocking a gene reduces fat

By blocking the expression of a certain gene in patients, University of Montreal researchers have contributed to the demonstration of great decreases in the concentration of triglycerides in their blood, even in various severe ...

Surprising similarity in fly and mouse motion vision

At first glance, the eyes of mammals and those of insects do not seem to have much in common. However, a comparison of the neural circuits for detecting motion shows surprising parallels between flies and mice. Scientists ...

Research grasps how the brain plans gripping motion

With the results of a new study, neuroscientists have a firmer grasp on the way the brain formulates commands for the hand to grip an object. The advance could lead to improvements in future brain-computer interfaces that ...