What Is a Primary Lesion?

Metastatic cancer refers to tumor cells invading the lymphatic vessels from the primary site, blood vessels or other pathways are taken to continue to grow there, forming a tumor of the same type as the primary site tumor. This process is called metastasis, and the formed tumor becomes a metastatic tumor. Or metastatic cancer. Metastases are characteristic of malignancies.

Metastatic cancer

Metastatic cancer refers to tumor cells invading the lymphatic vessels from the primary site, blood vessels or other pathways are taken to continue to grow there, forming a tumor of the same type as the primary site tumor. This process is called metastasis, and the formed tumor becomes a metastatic tumor. Or metastatic cancer. Metastases are characteristic of malignancies.

Common metastasis pathways include lymphatic metastasis, vascular metastasis, and implantation metastasis. Once the cancer cells invade

general

In order to detect lung metastasis as soon as possible, X-ray chest radiographs or chest radiographs should be taken every 1 to 6 months according to the doubling time of the primary tumor after radical tumor eradication, and the corresponding tumor markers such as alpha-fetoprotein and carcinoembryos should be checked at the same time. Antigen, calcitonin,

The reason why metastatic cancer is different from primary cancer is that its formation is a continuous dynamic process with multiple factors and multiple links. Metastatic cancer cells have more active motility and stronger drug resistance, especially with abundant new blood vessels, which greatly accelerates the proliferation rate, and has greater resistance to the host's immune function. Treatment of metastatic cancer should be a multi-target, multi-targeted compound structure drug.

Shedding cancer cells can adhere to other tissues to form implanted cancer nodules. Understand how cancer metastases,

Cancer researchers who study conditions for cancer metastasis have found that one of the most critical conditions is the formation of a network of new blood vessels. The process of forming new blood vessels is called angiogenesis.

Tumor angiogenesis refers to the infiltration and proliferation of the vascular network where the buds proliferate, providing nutrients and oxygen to cancer cells and expelling waste. In fact, tumor angiogenesis begins when accompanying cells release signaling molecules to surrounding normal tissues. This signaling activity of cancerous cells stimulates certain genes in host tissues, so that they in turn produce corresponding proteins to promote the growth of new hemangiomas.