Melanoma metastasis: new concepts and evolving paradigms Oncogene 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 Melanoma, Melanotic neuroectodermal tumor and other cutaneous pigmented Download Scientific Diagram Metastatic Tumors (Chapter 22) Placental and Gestational Pathology Project One NYC Metastasis Network A Rare Case of Aggressive Melanotic Schwannoma Occurred in Spinal Nerve of a 59 Year Old Male