a Melanoacanthoma of the upper labial mucosa. b Histopathologic Download Scientific Diagram Pathology Outlines Oral mucosal melanoma 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 Photomicrograph showing acanthosis and parakeratosis of the surface Download Scientific Diagram Microscopic features of oral mucosal nevi. a, b Compound nevus. Note Download Scientific Diagram Oral melanotic macule and primary oral malignant melanoma: Epidemiology, location involved, and clinical implications Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontics