Inflammation lights the way to metastasis Nature Melanotic schwannoma mimicking metastatic pigmented melanoma: a pitfall in cytological diagnosis 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 Malignant melanotic nerve sheath tumor Intracranial metastatic melanoma Radiology Reference Article Radiopaedia.org Eruptive melanocytic nevi heralding the diagnosis of metastatic malignant melanoma: A case report ScienceDirect