Melanotic macule. Benign. Dark spot on labia (or lip). Analogous to lentigo simplex. Hyperpigmented basal keratinocytes & dermal melanophages. Slight in single basal melanocytes; NO nests. More info like this in a Melanoacanthoma of the upper labial mucosa. b Histopathologic Download Scientific Diagram Reactive hyperplasias,precancerous and malignant lesions of the oral mucosa Krahl 2008 JDDG: Journal der Deutschen Dermatologischen Gesellschaft Wiley Online Library Oral melanoacanthoma and oral melanotic macule: a report of 8 cases, review of the literature, and immunohistochemical analysis Primary Oral Malignant Melanoma Pigmented Lesions of the Oral Mucosa: Clinical Presentation, Histology, and Recommendations for Management