Preferred Label : Extrahepatic Bile Duct Leiomyosarcoma;
NCIt synonyms : Bile Duct Leiomyosarcoma; Leiomyosarcoma of Bile Duct; Leiomyosarcoma of the Extrahepatic Bile Duct; Leiomyosarcoma of the Bile Duct; Leiomyosarcoma of Extrahepatic Bile Duct;
NCIt definition : An aggressive malignant smooth muscle neoplasm, arising from an extrahepatic bile
duct. It is characterized by a proliferation of neoplastic spindle cells.;