Labial melanotic macule. B). Increased numbers of me lanocytes along Download Scientific Diagram COM Jan. 2008 Diagnosis UW School of Dentistry Differential Diagnosis of Pigmented Lesions in the Oral Mucosa: A Clinical Based Overview and Narrative Review 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. Definition of melanocytic macules associated with Peutz Jeghers syndrome NCI Dictionary of Genetics Terms NCI Labial melanotic macule Stock Image C057 2077 Science Photo Library