melanotic macule of matrix 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 The Art of Nail Findings
The Art of Nail Findings in Patients with Skin of Color Next Steps in Dermatology Melanonychia Jefferson 2012 Dermatology Research and Practice Wiley Online Library Diagnosing And Treating Pigmented Nail Lesions Congenital Melanotic Macule of the Tongue: Report of Two Cases and Literature Review Head and Neck Pathology Springer Nature Link melanotic macule of matrix Subungual Melanocytic Lesions: Key Clinical and Pathologic Concepts and Biopsy Techniques Nail matrix nevi Courtesy of Dermoscopy of a nail matrix nevus in a 5 year old child. Brown Download Scientific Diagram
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