oral melanotic macule on lip macule. Benign. Dark spot labia (or lip). Analogous to lentigo simplex. Hyperpigmented basal keratinocytes & dermal melanophages. Slight ⬆️ in single basal melanocytes; NO nests. More info like this in An oral melanotic macule is

An oral melanotic macule is a harmless dark spot found on the lip, most often the lower lip, or inside the mouth, either on the gums, inside the cheek, or on the roof of the mouth. An oral melanotic Labial melanotic macule Mucosal melanocytic macules Differential Diagnosis of Pigmented Lesions in the Oral Mucosa: A Clinical Based Overview and Narrative Review PMC Labial Macules: Dark Spots on the Lip Dermatology Advisor Labial melanotic macule (brown spot on lip) (Stony Brook Case 1) dermatology dermatopathology

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