A Fast Growing Black Patch on the Upper Front Gum: Malignant Melanoma Springer Nature Link Labial melanotic macule (brown spot on lip) (Stony Brook Case 1) dermatology dermatopathology Figure 9 from Pigmented lesions of the oral cavity: review, differential diagnosis, and case presentations. Semantic Scholar Oral melanotic macule and primary oral malignant melanoma: Epidemiology, location involved, and clinical implications Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontics Oral Mucosal Melanosis IntechOpen