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Metastasis is a pathogenic agent's spread from an initial or primary site to a different or secondary site within the host's body; [1] the term is typically used when referring to metastasis by a cancerous tumor. [2] The newly pathological sites, then, are metastases (mets). [3][4] It is generally distinguished from cancer invasion, which is ...
Stage IV: cancers have often metastasized, or spread to other organs or throughout the body. Stage IV cancer can be treated by chemotherapy, radiation, or surgery. Despite treatment, a patient's mortality rate can be significantly higher with Stage IV cancer, e.g., the cancer can progress to become terminal.
10 million annually (2019) [ 6 ] Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. [ 2 ][ 7 ] These contrast with benign tumors, which do not spread. [ 7 ] Possible signs and symptoms include a lump, abnormal bleeding, prolonged cough, unexplained weight loss, and a ...
Stage 2: The cancer has not spread to other organs or body areas but may have spread within the lungs or to nearby lymph nodes in the chest. Treatment typically involves surgery, chemotherapy ...
The spread of pancreatic cancer to other organs may also cause symptoms. Typically, pancreatic adenocarcinoma first spreads to nearby lymph nodes , and later to the liver or to the peritoneal cavity , large intestine , or lungs. [ 3 ]
TNM staging system. The TNM Classification of Malignant Tumors (TNM) is a globally recognised standard for classifying the anatomical extent of the spread of malignant tumours (cancer). It has gained wide international acceptance for many solid tumor cancers, but is not applicable to leukaemia or tumors of the central nervous system.
This results in uncontrolled cell division in the body. The uncontrolled and often rapid proliferation of cells can lead to benign or malignant tumours (cancer). Benign tumors do not spread to other parts of the body or invade other tissues. Malignant tumors can invade other organs, spread to distant locations and become life-threatening.
Lung cancer. Lung cancer, also known as lung carcinoma, is a malignant tumor that begins in the lung. Lung cancer is caused by genetic damage to the DNA of cells in the airways, often caused by cigarette smoking or inhaling damaging chemicals. Damaged airway cells gain the ability to multiply unchecked, causing the growth of a tumor.
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