Melanoma primarily occurs in the skin, but it can also develop in other parts of the body, including the eyes (ocular melanoma) and mucous membranes. This type of skin cancer arises from the melanocytes, the cells responsible for producing pigment. Early detection and treatment are crucial, as melanoma can spread to other organs if not addressed promptly.
skin
These cancers would first appear on the skin.
skin
skin
skin
Ultraviolet radiation (part of sunlight).
Melanoma is a cancer of the skin. And the skin is technically a part of the integumentary system.
This type of mutation is known as a deletion.
Deletion
the final part of the body is foot
It would be as if a part of a chromosome were lost. This is called a deletion. It can cause a gene to be lost or not expressed. Several genetic disorders are caused by this process.
If the melanoma is spreading through the lymph system, some of the tumor may grow there, resulting in a nodule part way between the primary site and the original lymph node.