NEOPLASMS OF THE BILIARY TRACT radiologic and pathologic correlations.

Contents
1: Anatomy of the Biliary Tract
	1.1	 Bile Ducts
	1.2	 Gallbladder
	1.3	 Ampulla of Vater and Duodenal Papilla
	References
2: Bile Duct Cysts
	2.1	 Simple (Bile Duct) Cyst
	2.2	 Ciliated Hepatic Foregut Cyst
	2.3	 Peribiliary Cyst
	2.4	 Congenital Cyst in the Liver
		2.4.1	 Congenital Hepatic Fibrosis
		2.4.2	 Bile Duct Hamartoma
		2.4.3	 Polycystic Liver Disease
		2.4.4	 Caroli’s Disease and Caroli’s Syndrome
		2.4.5	 Choledochal Cyst
	References
3: Cystic Neoplasms
	3.1	 Mucinous Cystic Neoplasm
		3.1.1	 Mucinous Cystic Neoplasm, Benign
		3.1.2	 Mucinous Cystic Neoplasm, Malignant
	3.2	 Cystic Variant of Intraductal Papillary Neoplasms
	3.3	 Cystic Necrosis of Solid Tumors
	References
4: Benign Neoplasms of the Bile Ducts
	4.1	 Classification of Bile Duct Neoplasms
	4.2	 Benign Neoplasms
		4.2.1	 Bile Duct Adenoma
		4.2.2	 Biliary Papillomatosis
		4.2.3	 Other Benign Tumors
	References
5: Precursors of Cholangiocarcinoma
	5.1	 Predisposing Conditions
	5.2	 Precursor Lesions
		5.2.1	 Biliary Intraepithelial Neoplasia (BilIN)
		5.2.2	 Intraductal Papillary Neoplasm of the Bile Ducts
		5.2.3	 Mucinous Cystic Neoplasm
	References
6: Intraductal Papillary Neoplasm of the Bile Ducts
	6.1	 Pathology
	6.2	 Biological Behavior
		6.2.1	 Transformation to Overt Cholangiocarcinoma
		6.2.2	 Tumor Inside the Bile Duct
		6.2.3	 No Bile Duct Obstruction
		6.2.4	 Mucin Production
	6.3	 Morphology and Image Findings of Intraductal Papillary Neoplasm
		6.3.1	 Polypoid Intraductal Growth
		6.3.2	 Mucosal Spreading Growth
		6.3.3	 Cast-Like Intraductal Growth
		6.3.4	 Cystic Tumor
		6.3.5	 Clinical Significance of Imaging
	References
7: Cholangiocarcinoma
	7.1	 Cholangiocarcinoma Depending on Morphologic Features
	7.2	 Cholangiocarcinoma Depending on Bile Duct Locations
	7.3	 Histopathology
		7.3.1	 Conventional Tubular Adenocarcinoma
		7.3.2	 Bile Ductular Carcinoma
		7.3.3	 Combined Hepatocellular–Cholangiocarcinoma
		7.3.4	 Papillary Adenocarcinoma
		7.3.5	 Miscellaneous
	7.4	 Intrahepatic Cholangiocarcinoma
		7.4.1	 Mass-Forming Type
			7.4.1.1	 Bile Ductular Carcinoma
			7.4.1.2	 Combined Hepatocellular–Cholangiocarcinoma
		7.4.2	 Periductal Infiltrating Type
		7.4.3	 Intraductal Growing Type
			7.4.3.1	 Hepatocellular Carcinoma
			7.4.3.2	 Colon Cancer with Bile Duct Metastasis
	7.5	 Extrahepatic Cholangiocarcinoma
		7.5.1	 Mass-Forming Type
		7.5.2	 Periductal Infiltrating Type
		7.5.3	 Intraductal Growing Type
		7.5.4	 Cholangiocarcinoma Associated with Choledochal Cyst
		7.5.5	 Early Bile Duct Carcinoma—Carcinoma In Situ
	References
8: Tumors of the Gallbladder
	8.1	 Epithelial and Muscular Hyperplasia
		8.1.1	 Cholesterol Polyp
			8.1.1.1	 Image Findings
		8.1.2	 Adenomyomatosis
			8.1.2.1	 Imaging
	8.2	 Neoplasm of the Gallbladder
		8.2.1	 Precursors of Carcinoma
			8.2.1.1	 Adenoma
			8.2.1.2	 Biliary Intraepithelial Neoplasia (BilIN)
			8.2.1.3	 Intracystic Papillary Neoplasm
		8.2.2	 Carcinoma of the Gallbladder
			8.2.2.1	 Gross Pathology
			8.2.2.2	 Histopathology
			8.2.2.3	 Mass-Forming Type
			8.2.2.4	 Wall-Infiltrating Type
			8.2.2.5	 Gallbladder-Replacing Type
			8.2.2.6	 Spreading of Gallbladder Carcinoma
			8.2.2.7	 Carcinoma of the Gallbladder Associated with Choledochal Cyst
			8.2.2.8	 Other Malignant Tumor of the Gallbladder
	References
9: Tumors of the Ampulla of Vater and Duodenal Papilla
	9.1	 Benign Tumors
	9.2	 Carcinoma
	References