Black and Brown: Non neoplastic Pigmentation of the Oral Mucosa Head and Neck Pathology Springer Nature Link Pigmented Lesions Pocket Dentistry Pigmented Oral Lesions: When to Suspect Melanoma OdontoVida 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. Differential Diagnosis of Pigmented Lesions in the Oral Mucosa: A Clinical Based Overview and Narrative Review