Labial melanotic macule. B). Increased numbers of me lanocytes along Download Scientific Diagram Melanotic macules of the tongue in a newborn Journal of the American Academy of Dermatology Differential Diagnosis of Pigmented Lesions in the Oral Mucosa: A Clinical Based Overview and Narrative Review 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 Pathology Outlines Pigmented epithelioid melanocytoma