Oral pathology: Noting a pigmented macule that often presents a diagnostic dilemma Registered Dental Hygienists Congenital Melanotic Macule of the Tongue: A Five Year Follow up Dermatology Practical & Conceptual Labial Lentigo (labial melanotic macule) Cancer Therapy Advisor 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. Melanosis and Lentiginosis (benign) Vulvovaginal Disorders Pigmented lesions of the oral mucosa and perioral tissues: a flow chart for the diagnosis and some recommendations for the management ScienceDirect