HCV virological assessment Journal of Hepatology Frontiers Case report: Melanosis coli combined with colon cancer, causality or coincidence? Rapid point of care HCV RNA quantification in capillary whole blood for diagnosing chronic HCV infection, monitoring treatment and detecting reinfection 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 A rare case of melanosis ilei of unclear etiology ScienceDirect