Select a word from the pull down list and the definition will appear in the box below: Lentigo, Solar Basal Cell Carcinoma Carcinoma Malignant Melanin Melanocytes Melanoma Nevus Squamous Cell Carcinoma A brown macule resembling a freckle except that the border is usually regular, and microscopic proliferation of rete ridges is present. Scattered solitary nevus cells are seen in the basal cell layer.