Bile Duct Signet Ring Cell Carcinoma, also known as extrahepatic bile duct signet ring cell carcinoma, is related to signet ring cell adenocarcinoma and bladder signet ring cell adenocarcinoma, and has symptoms including abdominal pain, icterus and nausea. An important gene associated with Bile Duct Signet Ring Cell Carcinoma is KRT20 (Keratin 20), and among its related pathways/superpathways are Keratinization and Cytoskeletal Signaling.