Pay attention to the accurate screening of lung cancer in asymptomatic people, and early screening and early diagnosis of lung cancer

"Not only lung cancer, but almost no symptoms in the early stages of cancer, which is also the cunning of cancer
.
" On November 10, Liu Lunxu, executive vice president of West China Hospital of Sichuan University and vice chairman of the Thoracic and Cardiovascular Surgery Branch of the Chinese Medical Association, said
in the first program of the series of live broadcasts "How to effectively detect early lung cancer".

It is highly concealed and peripheral lung cancer is more difficult to detect

"The lungs are like a huge sponge, a small pimple grows in the sponge, if there is no invasion of the nerve, there will be no symptoms, and it is difficult for the patient to feel the growth
of the tumor.
" Liu Lunxu explained that the lungs themselves do not feel pain, and only when the tumor invades the chest wall, there will be pain sensations
.

At present, there are two ways to detect lung cancer, one is daily physical examination and screening, and the other is to find
it after symptoms appear.
"One of the characteristics of tumors is that the onset is very slow, but it accelerates
later.
" Hu Jian, director of the Department of Thoracic Surgery of the First Affiliated Hospital of Zhejiang University School of Medicine and chairman of the Thoracic Surgery Branch of Zhejiang Medical Association, suggested that when symptoms such as cough, blood in sputum, and chest pain appear, vigilance should be aroused and timely medical attention
.

"Many patients are in the advanced stage, but they only show extrapulmonary symptoms, which is very hidden
.
" Zhi Xiuyi, director of the Science Popularization Department of the Chinese Anti-Cancer Association and chief expert of the Department of Thoracic Surgery of Xuanwu Hospital of Capital Medical University, added that lung cancer can be divided into central lung cancer and peripheral lung cancer
according to different growth sites.
In terms of symptoms, the former has more obvious early symptoms, while the latter has later and milder symptoms, and most of them are found
through physical examination.
From the perspective of screening, due to the central occlusion of the lung, imaging screening such as CT is mainly aimed at peripheral lung cancer, and it is easy to miss the diagnosis of central lung cancer
.

The 5-year survival rate of early and advanced lung cancer is 90%, and accurate screening of asymptomatic people is crucial

In China, lung cancer has occupied the first
place in tumor incidence and mortality for many years.
According to data released by the National Cancer Center in 2022, there were 4.
064 million new cancer cases in China in 2016, including 828,000 new cases of lung cancer and 657,000 deaths, all ranking first in malignant tumors, seriously endangering people's lives and health
.

However, lung cancer is not so scary
.
Zhi Xiuyi said that the survival rate of lung cancer is closely related to
the time of its discovery.
"Through surgical intervention, the 5-year survival rate of early lung cancer is close to 100%; Patients with lung cancer detected in the late stage have a 5-year survival rate of less than 10%.

Zhi Xiuyi said
.

"Early screening and early diagnosis of lung cancer involves two levels, one is discovery and the second is differential diagnosis
.
" Liu Lunxu said that spiral CT is currently a recognized means for early detection of lung cancer, but in differential diagnosis, it should also be combined with some tests in molecular biology to improve the early detection, early diagnosis and early treatment
of lung cancer.

Hu Jian mentioned that there are currently two main methods for global evidence-based medicine to detect early lung cancer, one is low-dose spiral CT based on imaging, and the other is biologically-based serum detection
of lung cancer autoantibodies.
"The development of a series of high-tech means will further realize the early screening and early diagnosis
of early lung cancer.
" In asymptomatic people, it is important
to accurately detect early lung cancer through non-invasive screening.
”