30% of cancers in @smokers are related to smoking

Elephant News·Henan Radio and Television reporter Xindi

April 15-21 is the 28th National Cancer Prevention Awareness Week. It is important to remind smokers that 30% of cancers are related to smoking. Preventing cancer, changing bad living habits, and early screening and diagnosis are very important. The reporter interviewed this, please listen to the report:

At present, lung cancer is a malignant tumor with high morbidity and mortality in my country. According to statistics, there are 1/3 of lung cancer patients in my country. One of the important reasons is the large number of smokers. The nicotine in tobacco will directly lead to gene mutation in our normal cells, and gene mutation is the main reason for many tumors. Yang Yulun, vice president of Zhengzhou People’s Hospital and director of thoracic surgery: “There is a smoking index, its unit is year/cigarette, how many cigarettes you smoke a day multiplied by the number of years, more than 400 cigarettes is a high-risk factor.”

Yang Yulun reminded that we should also be alert to the harm of second-hand smoke, third-hand smoke and electronic cigarettes: “Smoking can be said to be harmless, and it is long-term irritating to the respiratory tract and lungs. Electronic cigarettes also have toxins. Second-hand smoke, many lesbians do not smoke I also got lung cancer, which is also caused by this. When I came home after eating out, my hair and clothes smelled of smoke. This is third-hand smoke, which is harmful to the human body.”

Long-term heavy smoking can lead to not only lung cancer, but also nose cancer, oral cancer, tracheal cancer, esophagus cancer, throat cancer, lung cancer, stomach cancer, pancreatic cancer, etc. Yang Yulun said that to prevent lung cancer, we must pay more attention to the occurrence of early pulmonary nodules: “In the past, people did not pay attention to pulmonary nodules. In recent years, there have been so many pulmonary nodules, and some were discovered in their teens. Although lung cancer is the development of pulmonary nodules, It is not necessarily all lung cancer. More than 90% of the pulmonary nodules discovered for the first time are benign, and they should be followed up and observed. Prevention should also target high-risk factors. If you have a bad smoking habit, you should quit smoking. Take precautions, pay attention to physical examinations over the age of 40, parents who have had cancer and should be screened, and some people in today’s fast-paced society, staying up late all year round will affect the immune system, so you should also pay attention.”

News link Early pulmonary nodules should be paid attention to

How long does it take to grow from a cancer cell to advanced lung cancer?

As we all know, the development speed of lung cancer is inconsistent. Some lucky “lazy cancer” patients can have no obvious progress for several years or even ten years. This kind of thing is not terrible; The ability to grow requires focused monitoring. Experts recommend regular follow-up examinations after the early detection of pulmonary nodules.

What is the average growth rate of pulmonary nodules?

Volume doubling time of pulmonary nodules: refers to the time it takes for the tumor to double in volume (calculated in months or days), representing the activity and invasiveness of tumor cells. In fact, there are many ways to determine the growth of pulmonary nodules, and the data of different research groups have certain differences. You can simplify the complex and refer to the following data:

1. Solid pulmonary nodules with an average doubling time of 149 days;

2. Pure ground glass nodules with an average doubling time of 813 days;

3. Mixed ground glass nodules with an average doubling time of 457 days.

For solid pulmonary nodules, the follow-up for more than 2 years did not show any enlargement, and it may be benign. For ground-glass nodules, due to the long doubling time, the follow-up time should be longer than 2 years, and long-term follow-up is even recommended.

Among ground-glass nodules, the diameter of the nodule, the size of the solid component in mixed ground-glass nodules, smoking, and previous history of lung cancer were risk factors for nodule growth.