Preferred Label : Extrahepatic Bile Duct Leiomyoma;
NCIt synonyms : Leiomyoma of the Extrahepatic Bile Duct; Leiomyoma of Extrahepatic Bile Duct;
NCIt definition : A benign smooth muscle neoplasm arising from an extrahepatic bile duct. It is characterized
by the presence of spindle cells with cigar-shaped nuclei, interlacing fascicles,
and a whorled pattern.;