"varicoid: obstruction by large collaterals"
"fibrotic: from intramural (epicholedochal) collaterals seen as thickened and densely enhancing bile ducts. It may rarely present as mass-like thickening of CBD 9"
"There are also underlying inflammatory and ischaemic changes resulting in peribiliary fibrosis, which can also result or be amplified by repeated episodes of cholangitis, a condition to which portal biliopathy predisposes 5,6."