A Case Series on Intraoral Blue Nevi with a Literature Review Based Clinico Pathologic Comparison of Intraoral Blue Nevi with Other Oral Melanocytic Nevi ORAL MELANOTIC MACULE (OMM) (Also called focal melanosis labial melanotic macule) A benign, localized, flat pigmented lesion of the oral mucosa Caused by a focal increase in melanin production Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360 Nevus of Ota with Rare Palatal Involvement: A Case Report with Emphasis on Differential Diagnosis Sharma 2011 Case Reports in Dentistry Wiley Online Library