Annual health check why cancer is also "the net"

Nowadays people pay attention to the physical examination, physical examination, however, every year, yet it is difficult to find early cancer.

Many people have is because of the emergence of symptoms to the doctor, found that the cancer has advanced. Filtered ads

Experts believe that first of all, most general physical examination is the Foundation examination, such as blood, urine, blood glucose, chest x-ray, which checks for and not cancer.

Secondly, the volume small, early cancer tests and imaging, it is difficult to find. Once again, some cancer growth in secluded, good at playing "hide-and-seek", resulting in missed. Finally, the cancer is good at guerilla invasion and metastasis is the most insidious cancer, let people being harassed.

Experts suggest that if you have cancer risk factors such as family history, physical examination must be focused, focusing on the check to the early detection of cancer.

Interviews with experts

The first affiliated hospital of Henan University Radiology physician Xu Hongwei

Henan province Deputy Physician Oncology hospital, medical oncology, Oncology, Dr. Chen Xiao-Bing

Henan Provincial Hospital Oncology's Yang-Qin

Mr. Zhang is an old smokers, from 17-year-old is beginning to learn to smoke, smoke age 46 years.

He often cough, in recent years, cough, phlegm, occasionally also with streaks, so he often worried about their own lungs. But fortunately, the Unit organized medical examination every year, each time he photographed chest radiograph examinations, never found lung problems. But this year, check end for less than three months, he not only cough increased, the emergence of chest pain, hoarseness, shortness of breath and other symptoms, hurry to the hospital, the doctors suspected lung cancer, he made a lung CT. Results of a mediastinum rear has a size of 2 cm, surgical removal of tumors, pathological confirmed for squamous cell carcinoma of the lung.

Mr. Zhang and his family very confused, why do health examination, but no problem checking out?

With CT film, he has found the first affiliated hospital of Henan University Radiology physician Xu Hongwei, Xu said the doctor, the patient while worrying about their own lungs may have a problem, every year for health examination, but he overlooked an important question: physical examination of the chest, when, and can't find that early stage lung cancer.

Through the chest, the check can only be found in larger lesions. For small lesions, or behind the heart, the diaphragm inside the rear, mediastinum tumors are hard to find. At this time, it is only through the chest CT, to discover these lung disease, so early detection of lung cancer.

Resolution: physical examination to early detection of cancer

We all know that cancer can be detected early, the chances of cure are greatly increased.

Unfortunately, in the absence of symptoms by general health examination and screening to early detection of cancer, currently the world's only medical recognized breast cancer, colorectal cancer, cervical cancer, prostate cancer, etc. And everyday we see cancer patients, most of all because of a more or less, or light or heavy clinical symptoms should seek medical advice before they are diagnosed.

In fact, the General physical examination found cancer are not necessarily cancer early, and even accepted expensive equipment checks, we cannot guarantee the early detection of all cancers.

So, why the General physical examination to early detection of all cancer? Henan Cancer Hospital Oncology Dr. Chen Xiao-Bing, Deputy Director of the physician and Director of the Oncology Department of Henan provincial hospital physicians Yang dyachenko believes that the main reasons are as follows:

Most regular health check-based medical examination there is now a general increase in awareness, many units or individuals annually for health examination.

However, because the health check program is many, many people do not know what to do, therefore, many of them will select some of the very basis of the inspection items, such as blood, urine, blood glucose, chest, etc. Furthermore, the individual does not own the right to choose medical projects, so that you will miss many opportunities to discover cancer. While an individual examination, many of the considerations for economic reasons, will choose relatively cheap medical projects, like the earlier of the patient, chest than chest CT is a lot cheaper, so many people would choose chest instead of chest CT.

Early cancer volume tiny tiny tumors generally refers to the diameter is less than 1 cm of the tumor.

For body location deep tumors, particularly the volume of tiny tumors, general physical examination and radiographic examination, it is difficult to guarantee that all can find out. Tumor growth is a gradual process, only when the tumor grows to a certain size and density, can be found. A particle size of only Sesame, General lung cancer by tests and x-ray check it out. Even if a chest x-ray showed a small shadow, but also because of the disease is too small, and the difference between a benign lesion, such as inflammation, so doctors often recommend follow-up.

Non-cutaneous cancer often "hide-and-seek" pancreatic cancer, ovarian cancer, mediastinum tumors and other growth regions more subtle tumours of the non-surface to early detection through regular medical examination.

Even through the chest x-ray inspection easy discovery of lung cancer, if tumor growth in front or behind the heart, because the tumor Imaging shadows may and heart and mediastinum shadow overlap, resulting in missed chest x-ray.

Cancer malignant cancer is the most insidious invasion and metastasis.

High levels of certain malignant cancer, although the primary focus is small, but it may have happened Hematogenous or lymphatic dissemination. For example, each year shooting x-ray, aimed at improving early diagnosis rates of lung cancer, but this means still cannot reduce lung cancer mortality, the reason is that lung cancer in the clinic is divided into small cell lung cancer and non-small cell lung cancer, small cell lung cancer, malignant lesions with a high degree of progress quickly, very prone to shifting, x-ray lung nodules found are very small, but may have systemic metastases occur.

General inspection

Measuring method of limiting health examination, inspection methods, and also the influence of early cancer detection rate. Some advanced test may improve cancer detection rate, but these advanced inspection means either spend huge popularity, it is difficult; either because the check may have potential negative health effects (such as radiation), which limits their widespread use.