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A person is pointing on a black cancer on the back of  woman

Black skin cancer and precursors

Black skin cancer and precursors

Pigmentation in the form of birthmarks can be found on every human body. Most of these birthmarks are benign and have minimal change in the course of life. So-called congenital nevus cell nevi can already be found after birth, and over the years new moles are added. These rarely change into malignant tissue proliferation. However, if this is the case, it is called skin cancer.

Forms and causes

Malignant melanoma: If the mutation affects the melanocytes, i.e. the pigment-forming cells, this tissue change is called "black skin cancer" or "malignant melanoma". Genetic predisposition, strong sun exposure and age are considered risk factors. The skin type is also relevant. Dysplastic nevus cell nevi: These are birthmarks that are changing and can represent precursors of black skin cancer. There are certain characteristics according to which a dermatological check should be carried out to determine whether it is a questionable change. diagnosis The diagnosis is made with the aid of the dermatoscope and the microscopic incident light camera. This gives our dermatologists the opportunity to assess a skin change with a magnification of 70 times. The birthmark is thus visually represented in detail of its pigmentation. In the event of rapid changes, unusual pigmentation and other circumstances such as itching or bleeding, the birthmark is completely surgically removed and sent to a dermatohistological laboratory for tissue analysis.


In the case of dysplastic nevus cell nevi, i.e. the preliminary stages of a cell change, regular control of all birthmarks and the associated photographic documentation is recommended. Risk factors that favor the development of black skin cancer should be avoided all the more. Once the diagnosis of black skin cancer has been made, the therapy depends on the histological assessment, i.e. the stage. A re-excision, i.e. re-operating the site, with a greater safety margin on all sides and examining the surrounding lymph nodes and other organs to rule out metastasis are standard. Medicines or radiation are rarely used.