What is the difference between lentigo and lentigo maligna?
Lentigo maligna melanoma is a type of invasive skin cancer. It develops from lentigo maligna, which is sometimes called Hutchinson’s melanotic freckle. Lentigo maligna stays on the outer surface of the skin. When it starts growing beneath the skin’s surface, it becomes lentigo maligna melanoma.
Does melanoma in situ spread?
In situ melanomas don’t spread to other parts of the body or cause death, but if the tumor has an opportunity to grow even one millimeter deep into the skin, it can lead to more involved treatment and greater danger. If left untreated, it can metastasize and even become life-threatening.
Can lentigo maligna melanoma spread?
It is a slow growing lesion that appears in areas of skin that get a lot of sun exposure, such as the face or upper body. Because it grows slowly it can take years to develop. Similar to melanoma in situ, lentigo maligna has not spread and is only in the top layer of skin.
How common is lentigo maligna?
Lentigo maligna (LM) is relatively rare form of malignant melanoma (MM), corresponding to 4–15% of all MM cases .
Why is melanoma so metastatic?
Melanoma occurs due to a mutation in melanin-producing skin cells. Doctors currently believe that too much exposure to ultraviolet light either from sun exposure or tanning beds is the leading cause. Metastatic melanoma occurs when the melanoma is not detected and treated early.
What is melanoma skin cancer and what does melanoma look like?
Often the first sign of melanoma is a change in the shape, color, size, or feel of an existing mole . However, melanoma may also appear as a new mole. People should tell their doctor if they notice any changes on the skin. The only way to diagnose melanoma is to remove tissue and check it for cancer cells.
What is superficial malignant melanoma?
Superficial spreading melanoma is the most common type of melanoma, a potentially serious skin cancer that arises from pigment cells (melanocytes). It is a form of melanoma in which the malignant cells tend to stay within the tissue of origin, the epidermis, in an ‘in-situ’ phase for a prolonged period (months to decades).
What is the scientific name for melanoma?
Melanoma, also known as malignant melanoma, is a type of cancer that develops from the pigment-containing cells known as melanocytes.