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Melanoma is the most dangerous type of skin cancer; it develops from the melanin -producing cells known as melanocytes. [ 1 ] It typically occurs in the skin, but may rarely occur in the mouth, intestines, or eye (uveal melanoma). [ 1 ][ 2 ] In women, melanomas most commonly occur on the legs; while in men, on the back. [ 2 ]
Because there are no lymphatic channels to the uveal tract, metastasis occurs through local extension and/or blood-borne dissemination. [20] The most common site of metastasis for uveal melanoma is the liver; [21] the liver is the first site of metastasis for 80%-90% of ocular melanoma patients. [22]
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 ...
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.
B16 melanoma is a murine tumor cell line used for research as a model for human skin cancers. B16 cells are useful models for the study of metastasis and solid tumor formation, and were one of the first effective murine tools for metastasis research. These cells readily metastasize to lymph nodes and lungs.
The ability to invade surrounding tissue and metastasise is a hallmark of cancer. The hallmarks of cancer were originally six biological capabilities acquired during the multistep development of human tumors and have since been increased to eight capabilities and two enabling capabilities. The idea was coined by Douglas Hanahan and Robert ...
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 ...
Invasion (cancer) Histopathology of an invasive carcinoma of no special type of the breast. The presence of irregular tumor nests in fatty tissue at right in image confirms the invasive nature. Invasion is the process by which cancer cells directly extend and penetrate into neighboring tissues in cancer. [1] It is generally distinguished from ...
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