Spontaneous regression of malignant melanoma (in radial growth phase) is a common feature and its association with poor prognosis is a well known fact. Regression can be seen without clinical signs. In complete regression; melanoma cells in the epidermis was lost, but in the partial regression; melanoma cells can be found in the epidermis. In our case, a malignant melanoma which is developed on the basis of a nevus with regression features is presented.
Keywords: malignant melanoma, regression, nevus