Simple cryosurgical treatment of the oral melanotic macule ScienceDirect Happy Wednesday! , In this video, a patients labial melanotic macule (a benign pigmented lesion) is being treated with liquid nitrogen. Labial melanotic macules are flat and asymmetrical with a Oral Melanotic Macule Is It Dangerous KERUSSO 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 A Rare Case of Oral Mucosal Pigmentation: Differential Diagnosis and Case Presentation JCDA