Editing Cholangiocarcinoma (section)

===Abdominal imaging===
[[File:CT cholangioca.jpg|right|thumb|[[Computed tomography|CT scan]] showing cholangiocarcinoma]]
[[Ultrasound]] of the [[liver]] and [[biliary tree]] is often used as the initial imaging modality in people with suspected obstructive jaundice.<ref>{{cite journal | vauthors = Saini S | title = Imaging of the hepatobiliary tract | journal = New England Journal of Medicine | volume = 336 | issue = 26 | pages = 1889–94 | date = June 1997 | pmid = 9197218 | doi = 10.1056/NEJM199706263362607 }}</ref><ref>{{cite journal | vauthors = Sharma MP, Ahuja V | title = Aetiological spectrum of obstructive jaundice and diagnostic ability of ultrasonography: a clinician's perspective | journal = Tropical Gastroenterology | volume = 20 | issue = 4 | pages = 167–9 | year = 1999 | pmid = 10769604 }}</ref> Ultrasound can identify obstruction and ductal dilatation and, in some cases, may be sufficient to diagnose cholangiocarcinoma.<ref>{{cite journal | vauthors = Bloom CM, Langer B, Wilson SR | title = Role of US in the detection, characterization, and staging of cholangiocarcinoma | journal = Radiographics | volume = 19 | issue = 5 | pages = 1199–218 | year = 1999 | pmid = 10489176 | doi = 10.1148/radiographics.19.5.g99se081199 | doi-access = free }}</ref> [[Computed tomography]] (CT) scanning may also play an important role in the diagnosis of cholangiocarcinoma.<ref>{{cite journal | vauthors = Valls C, Gumà A, Puig I, Sanchez A, Andía E, Serrano T, Figueras J | display-authors = 6 | title = Intrahepatic peripheral cholangiocarcinoma: CT evaluation | journal = Abdominal Imaging | volume = 25 | issue = 5 | pages = 490–6 | year = 2000 | pmid = 10931983 | doi = 10.1007/s002610000079 | s2cid = 12010522 }}</ref><ref>{{cite journal | vauthors = Tillich M, Mischinger HJ, Preisegger KH, Rabl H, Szolar DH | title = Multiphasic helical CT in diagnosis and staging of hilar cholangiocarcinoma | journal = AJR. American Journal of Roentgenology | volume = 171 | issue = 3 | pages = 651–8 | date = September 1998 | pmid = 9725291 | doi = 10.2214/ajr.171.3.9725291 }}</ref><ref>{{cite journal | vauthors = Zhang Y, Uchida M, Abe T, Nishimura H, Hayabuchi N, Nakashima Y | title = Intrahepatic peripheral cholangiocarcinoma: comparison of dynamic CT and dynamic MRI | journal = Journal of Computer Assisted Tomography | volume = 23 | issue = 5 | pages = 670–7 | year = 1999 | pmid = 10524843 | doi = 10.1097/00004728-199909000-00004 }}</ref>