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 ICD 10 Coding for Loose Bowel Movements Endoscopic findings of different grades and severities of melanosis Download Scientific Diagram “Melanosis” in the small and large intestine Melanosis Coli) Cathartic Colon