Histomorphometric and Immunohistochemical Characteristics of Oral Melanotic Macule Overlap with Oral Mucosal Lentigo Volume 6 Issue 1 Reactive hyperplasias,precancerous and malignant lesions of the oral mucosa Krahl 2008 JDDG: Journal der Deutschen Dermatologischen Gesellschaft Wiley Online Library Melanocytic nevi and melanomas of the oral mucosa: detailed description of a case series Anais Brasileiros de Dermatologia (Portuguese) a Melanoacanthoma of the upper labial mucosa. b Histopathologic Download Scientific Diagram 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