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Acral lentiginous melanoma. Acral lentiginous melanoma is a type of skin cancer. [6] It typically begins as a uniform brownish mark before becoming darker and wider with a blurred irregular edge, most frequently seen in the foot of a person with darker skin. [6] It may become bumpy and ulcerate. [6]
Deaths. 59,800 (2015) [ 6 ] 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 ...
Post excision pathology was "Lentigo maligna - Melanoma in situ". Lentigo maligna is where melanocyte cells have become malignant and grow continuously along the stratum basale of the skin, [1] but have not invaded below the epidermis. [2] Lentigo maligna is not the same as lentigo maligna melanoma, as detailed below.
Lentigo. A lentigo (/ lɛnˈtaɪɡoʊ /) (plural lentigines, / lɛnˈtɪdʒɪniːz /) is a small pigmented spot on the skin with a clearly defined edge, surrounded by normal-appearing skin. It is a harmless (benign) hyperplasia of melanocytes which is linear in its spread. This means the hyperplasia of melanocytes is restricted to the cell ...
Lentigo maligna melanoma. Lentigo maligna melanoma is a melanoma that has evolved from a lentigo maligna, [1]: 695 as seen as a lentigo maligna with melanoma cells invading below the boundaries of the epidermis. [2] They are usually found on chronically sun damaged skin such as the face and the forearms of the elderly.
Superficial spreading melanoma (SSM) is a type of skin cancer that typically starts as an irregularly edged dark spot typically on sun-exposed part of the body. [2][3] The colour may be variable with dark, light and reddish shades; occasionally no color at all. [2] It typically grows in diameter before spreading to deeper tissue, forming a bump ...
Melanocytic tumors of uncertain malignant potential. Melanocytic tumors of uncertain malignant potential (MELTUMP) are melanocytic lesions in the dermis that cannot be classified by morphology as either benign naevi (moles) or malignant melanomas because the mass shows features of both. Several lesion types may be classified as MELTUMPs: these ...
Dermatologist and pathologist. Known for. Research on melanomas. Wallace H. Clark Jr. (May 16, 1924 – November 28, 1997) was an American dermatologist and pathologist. He is best known for devising the "Clark's level", or Clark Level, system for classifying the seriousness of a malignant melanoma skin cancer based on its microscopic appearance.
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