Diagnosis of oral pigmentations and malignant transformations ScienceDirect This patient has multiple labial melanotic macules. These are essentially freckles of the lips. These most commonly involve the lower lip. This patient had involvement of both the upper and lower lips. Oral melanoma and other pigmentations: when to biopsy? Lambertini 2018 Journal of the European Academy of Dermatology and Venereology Wiley Online Library Pigmented Lesions of the Oral Mucosa Pocket Dentistry Nevus in the Oral Cavity Dark pigmentation in the oral cavity Clinical Advisor