Old notes, see Gallbadder section

Extrahepatic ddx

• Malignant
  • BilIN
  • adenocarcinoma
  • other carcinoma
    • papillary carcinoma
    • mucinous carcinoma
    • clear cell carcinoma
    • adenosquamous carcinoma
    • undifferentiated carcinoma
    • neuroendocrine carcinoma
• Benign
  • reactive bile duct epithelium
  • PSC
  • neoplasms
    • biliary papillomatosis
    • botryoid embryonal rhabdomyosarcoma
    • cystadenoma
    • granular cell tumor
    • carcinoid tumor
  • other
    • intramural Beale duct
    • choledochal cyst
    • carcinoid tumor

Intrahepatic (see liver)