Malignant melanotic nerve sheath tumors in the spinal canal of psammomatous and non psammomatous type: Two case reports Diffuse cutaneous melanosis: rare complication of metastatic melanoma * ScienceOpen 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 Understanding Melanoma: Treatment Options for Stage IV Melanoma Pigmented Lesions of the Central Nervous System: Radiologic Pathologic CorrelationRadioGraphics Pathology Outlines Metastatic melanoma