Bile carcinoembryonic cell adhesion molecule 6 as a potential diagnostic tool for malignant biliary stenotic lesions Research Authors Mohamed Abd-Elhakim Mahdy MSc, Lobna Abdel Wahid, Alaa S. Abd-Elkader, Ramy A. Hassan & Hanan M. Ahmed Research Department Department of General Surgery Research Journal The Egyptian Journal of Internal Medicine Research Member Ramy Abdelrahim Hassan Moharram Research Year 2019