A recent update on the morphological classification of intraductal papillary neoplasm of the bile duct: Correlation with postoperative prognosis and pathological features
Fig 2
Postoperative survival by morphology and lesion extent in all IPNB cases.
DSS in patients with IPNB was compared according to (A) morphological subtype—branched, main duct, and mixed—and (B) anatomical extent of the tumor—confined to the intrahepatic bile duct, extrahepatic bile duct, or both. No disease-specific deaths occurred in the branched type. There was no significant difference in DSS between the branched and main duct types. In contrast, the mixed type showed significantly worse 1-, 3-, and 5-year DSS compared to the branched type (p = 0.044). DSS did not significantly differ among the groups based on tumor extent. Abbreviations: DSS, disease-specific survival; IPNB, intraductal papillary neoplasm of the bile duct.