What is metastatic adenocarcinoma? What are the dangers of metastatic adenocarcinoma?

Metastatic adenocarcinoma refers to a type of cancer that clinically originates from a tumor in another organ system and then metastasizes to other organs through direct infiltration, airway implantation, lymphatic vessels, or blood vessels and continues to proliferate and grow, forming a tumor of the same nature as the primary tumor.

Metastatic adenocarcinoma refers to a type of cancer that is clinically caused by a tumor that originates in other organ systems and then spreads to other organs through direct infiltration or airway implantation or lymphatic or blood vessels and continues to proliferate and grow, forming a tumor of the same nature as the primary tumor. Metastatic means that the cancer lesion is not primary but is transferred from somewhere else, which is commonly known as "cancer cell spread". Common types of metastatic adenocarcinoma include: cervical lymph node metastasis, metastatic breast cancer, metastatic lung cancer, metastatic liver cancer, peritoneal metastasis, metastatic bone tumors, etc. The following are some typical metastatic adenocarcinomas.

Cervical lymph node metastatic carcinoma accounts for about 3/4 of the total number of neck malignant tumors; its incidence rate among neck masses is second only to chronic lymphadenitis and thyroid disease. The vast majority (85%) of primary cancer foci are in the head and neck, especially nasopharyngeal carcinoma and thyroid cancer metastasis. The primary cancer foci of supraclavicular fossa metastatic tumors are mostly in the chest and abdomen (including lungs, mediastinum, breasts, gastrointestinal tract, pancreas, etc.); but the cervical lymph node metastasis of gastrointestinal tract and pancreatic cancer mostly occurs in the left supraclavicular fossa through the thoracic duct.

Breast cancer is the main malignant tumor that endangers women's health. Experts point out that after breast cancer develops to a certain stage, there will be different degrees of metastasis. Metastatic breast cancer is a difficult point in the treatment of advanced breast cancer, but now the survival rate of lung metastasis, liver metastasis, etc. of breast cancer after treatment is relatively long, so patients with metastatic breast cancer should not give up easily. Generally speaking, the common metastatic sites of breast cancer are lung and pleura, bones, skin soft tissue, liver, and brain. For metastasis in different parts, the treatment methods and treatment effects are different. Lung is the most common metastatic site of breast cancer. It usually manifests as dry cough at the beginning, which is ineffective for antibiotic treatment. Commonly used treatment methods are chemotherapy containing platinum anticancer drugs (such as PDD). Such as CAP regimen, NVB+PDD regimen, etc. Generally, more than 60% of patients' lesions can be completely eliminated in a short period of time.

Metastatic lung cancer refers to cancer that is metastatic to the lungs from any part of the body through various forms. It is a manifestation of the late stage of malignant tumors and is extremely common clinically. The lungs are an organ prone to metastasis because: the lungs are the first filter that the macrocirculatory blood must pass through; the pulmonary circulation is a low-pressure system with relatively slow blood flow, and the coagulation-fibrinolytic activity of the lungs is relatively high, which is conducive to the stagnation and implantation of cancer cells; the lungs have rich blood sources and receive dual blood supply from the pulmonary artery and bronchial artery. The pathways of metastasis include hematogenous metastasis, lymphatic metastasis, bronchial dissemination and direct invasion. The lung metastasis of various organ cancers is first hematogenous metastasis, and lymphatic metastasis is more common in pelvic and abdominal cancers. Bronchial dissemination is rare, but can be seen in bronchoalveolar carcinoma. Direct invasion is more common in esophageal cancer, breast cancer and liver cancer.