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 Pathology Outlines Metastatic melanoma Pigmented Lesions of the Central Nervous System: Radiologic Pathologic CorrelationRadioGraphics Diffuse melanosis cutis: a rare manifestation of metastatic melanoma BMJ Case Reports A para aortic malignant melanotic nerve sheath tumor mimicking a gastrointestinal stromal tumor: a rare case report and review of literature BMC Surgery Springer Nature Link Malignant melanotic nerve sheath tumors in the spinal canal of psammomatous and non psammomatous type: Two case reports