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 Dermoscopy Atlas Diagnosis Detail Immunohistochemical analysis of melanocyte content in different zones of vitiligo lesions using the Melan A marker Transformation of a benign oral pigmentation to primary oral melanoma Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontics histology Colon. Intramucosal carcinoma tubulo villous adenoma high grade #pathology #medicine #histologylaboratory #histopathology