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 Labial melanotic macule. B). Increased numbers of me lanocytes along Download Scientific Diagram Lentigo pathology Oral melanoacanthoma and oral melanotic macule: a report of 8 cases, review of the literature, and immunohistochemical analysis Pathology Outlines Invasive melanoma Pathology Outlines Staging mucosal melanoma of the head & neck