Pathology Outlines Atypical melanocytic proliferation Pathology Outlines Melanotic macule Pathology Outlines Nevoid melanoma Pathology Outlines Nevus spilus Labial Lentigo (labial melanotic macule) Cancer Therapy Advisor 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