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 Transformation of a benign oral pigmentation to primary oral melanoma Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontics Pigmented Lesions of the Oral Mucosa Springer Nature Link Pathology Outlines Atypical melanocytic proliferation Unusual variants of malignant melanoma Modern Pathology Labial Lentigo (labial melanotic macule) Cancer Therapy Advisor