Melanocytic Lesions A Guide to Clinical Differential Diagnosis of Oral Mucosal Lesions Continuing Education Course dentalcare.com A collection of resources for RACGP exams Next Gen GP Text Book live webinars AKT and KFP questions Pigmented Lesions schneider Flashcards Quizlet Labial melanotic macule. B). Increased numbers of me lanocytes along Download Scientific Diagram Brown spots, especially on the lips, can be alarming to some. In some instances it can indicate rare oral mucosal melanoma, however in this case it was a non cancerous labial melanotic macule. Differential Diagnosis of Pigmented Lesions in the Oral Mucosa: A Clinical Based Overview and Narrative Review