DETERMINATION OF HEPATITIS C VIRUS GENOTYPE IN TURKEY BY PYROSEQUENCING TECHNOLOGY AND ITS ASSOCIATED WITH VIRAL LOAD AND SGOT , SGPT LEVELS Semantic Scholar Detection of residual HCV RNA in patients who have achieved sustained virological response is associated with persistent histological abnormality eBioMedicine Hepatitis C Virus (HCV) Discovery HCV Abuse of laxatives and melanosis coli Melanosis Coli El Atlas Gastrointestinal gastrointestinalatlas.com 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