Cancer is a major public health problem worldwide. In recent years, due to factors such as environment, diet, and aging population, the global incidence of cancer has been increasing, and cancer has become increasingly prominent as the leading cause of death.
According to the 2020 Global Cancer Statistics Report, the number of new cancers in the world reached 19.3 million in 2020.
Most of the common cancers in China are lung cancer, liver cancer, stomach cancer, intestinal cancer, etc., and many cancers are insidious in the early stage, and most of them have entered the middle and advanced stages when patients are unwell.
In fact, many cancers will show "sentinel" symptoms in the legs, and if we can correctly identify these early signs, we can compete with the disease for more time.
Unusual changes in the color of the legs
Normally, there is no noticeable change in the legs**, and if you notice that the color is gradually darkening, you need to pay attention.
Such as:Malignant melanoma can cause abnormal melanin precipitation in patients**With the development of the disease, the lesion will enlarge, resulting in bulges, plaques and nodules in the affected area, and the color will also show gray-black, brown, light red and other miscellaneous colors.
In addition, squamous cell carcinoma can also cause color abnormalities.
*Squamous cell carcinoma can be transformed from keratosis, mucosal leukoplakia and other precancerous diseases, and in addition to color changes, it is often accompanied by a special smell of decay and foul odor.
Inexplicable swelling of the legs
When cancer cells are raging in the human body, the vascular nerves are also not spared.
Most patients with malignant tumors have hypercoagulability, and the flowing blood tends to form solid thrombosis. As early as 150 years ago, Professor Armand Trousseau of France had already made a statement that thrombophlebitis could be a symptom of visceral malignancy.
Due to the presence of abundant blood vessels and nerves in the legs, thereforeSome people with cancer present with discomfort, swelling and pain in the lower extremities, went to the hospital for color ultrasound examination and found that the original unobstructed venous blood vessels had already been blocked by thrombosis, forming deep vein thrombosis of the lower limbs. Especially for patients with lung cancer, pancreatic cancer, and ** tumors.
Studies have confirmed that the incidence of thrombosis in different tumors is as follows:Primary brain tumors (47%), pancreatic cancer (19.)2%), gastric cancer (158%), lung cancer (139%)。
Therefore, once you find that your leg is swollen, it is best to go to the hospital for a check-up, if it is not caused by other reasons for blood clots, you need to do a general physical examination to rule out whether it is because of cancer.
The pain in the leg was unbearable
Bone metastasis may occur due to the frantic growth of cancer cells that continuously absorb nutrients from the body, in addition to absorbing nutrients from the lesions.
Since bones are rich in blood and factors that promote the growth of cancer cells, the most preferred parts of cancer cells are in the joints of bones.
Expert Consensus on Clinical Diagnosis and Treatment of Bone Metastasis of Malignant Tumors" pointed outBreast, prostate, lung, thyroid and kidney cancers are the most likely to have bone metastases, and more than 90% of bone metastases come from these five types of tumors. Once the cancer has metastasized, forming a new lesion in the leg, it can cause intense pain.
However, leg pain is a very common symptom that almost everyone experienced, and some patients often mistake it for pain caused by joint wear and tear.
A lump appears in the leg
In general, the majority of lumps or lumps in the legs are benign multiple lipomas, but it is not excluded that the cancer is caused by the metastasis of the legs.
Cancer cells bring about a lump in the legs, most likelyIt grows bigger and bigger in a short period of time and feels stiffer to the touch than normal muscles. The edge of the lump is not clear, and it is difficult to move with the surrounding tissues.
In such cases, it is necessary to consider whether cancer cells have metastasized.
When cancer cells metastasize from lung cancer, prostate cancer, and other diseases, abnormalities may appear in the legs. Liposarcoma, rhabdomyosarcoma, acinar soft tissue sarcoma, etc., can also bring leg lumps.
Finally
After entering the human body, cancer cells hide from the immune system, find a foothold and quietly multiply until they grow in scale and launch a fierce attack on various organs of the human body.
It is said that "it is easy to ban micro, but it is difficult to save the last", if you can detect the "early warning signal" sent by the body at an early stage, and seek medical examination in time, you can win more time.
Share the early screening of several types of common cancers, and recommend regular physical examinations for high-risk groups.