Multifocal cutaneous melanoacanthoma with ulceration: A case report with review of literature Indian Journal of Dermatology, Venereology and Leprology This is a very rare case of metastatic oral mucosal melanoma to the colon with an unusual presentation mimicking melanosis coli. The colonoscopy findings show no mass effect but multiple hyperpigmented lesions Oral melanoacanthoma and oral melanotic macule: a report of 8 cases, review of the literature, and immunohistochemical analysis a Melanotic macule at the wetdry line of the lower lip. b Melanotic Download Scientific Diagram