Skin Lesions in Melanoma and Kaposi's Sarcoma Journal of Clinical Oncology An oral melanotic macule is a harmless dark spot found on the lip, most often the lower lip, or inside the mouth, either on the gums, inside the cheek, or on the roof of the mouth. An oral melanotic Soft Tissue Tumors with Melanocytic Diff. PDF] Giant melanotic neuroectodermal tumor of infancy (melanotic progonoma) of the head and neck: report of a malignant case. Semantic Scholar 10 Common Mistakes to Avoid for Lip Pigmentation and How to Fix Them