How Did Gavin Creel Die? What To Know About Rare Type of Sarcoma What Is Metastatic Melanoma and Where Can It Spread? New Research Helps Identify Uveal Melanomas Most Likely to Spread to the Liver 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 Oncology Letters Metastatic Melanoma of the Gallbladder ACS