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 Frontiers Gastric and colonic metastases of malignant melanoma diagnosed during endoscopic evaluation of symptomatic anemia presenting as angina: a case report Diffuse cutaneous melanosis: rare complication of metastatic melanoma * ScienceOpen Upper gastrointestinal endoscopy showing multiple dark melanotic Download Scientific Diagram Metastatic melanoma Stock Image C056 0518 Science Photo Library