Dubreya Precancerous Melanosis

Dubreya's precancerous melanosis (also known as lentigo maligna or melanosis precancerous limited) is a precancerous skin condition characterized by the appearance of multiple brown spots on the skin.

This rare disease occurs mainly in older people after prolonged exposure to sunlight. In dubreya precancerous melanosis, atypical melanocytes (pigment cells) accumulate in the upper layers of the skin, which leads to the appearance of characteristic brownish spots of irregular shape.

The spots in this disease have jagged, jagged edges and vary in color from light brown to dark brown or almost black. They can appear on exposed areas of the skin exposed to prolonged sun exposure, most often on the face, neck, chest, and forearms.

Dubreya precancerous melanosis is considered a precancerous disease, since in 10-15% of cases it can transform into malignant melanoma. Therefore, if suspicious spots appear, it is recommended to contact a dermatologist for examination and regular monitoring. Timely treatment usually prevents the development of melanoma.

Dubreya is a pre- or metastatic lentiginous skin disease that develops in the affected area of ​​the skin, diffuse papular melanosis. K. Dubreu proposed to rename 2 types of precancer melanosis: limited ulcerative melasma, affecting the extremities and protruding beyond the bone contours and lentigenic precancer, spreading diffusely throughout the skin. Dubruis also identified primary and secondary precancer of the mammary gland.

The precancerous melanotic formation is called Dubreuer's melanoma.