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Diagnostic ultrasound ( PDFDrive )

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CHAPTER 6 The Biliary Tree and Gallbladder 189

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FIG. 6.28 Resectable Hilar Cholangiocarcinoma. (A) Sagittal image of the right lobe shows an invasive central echogenic tumor with segmental

dilation of the ducts of segments 8 and 5, indicating second-order branch involvement. (B) Transverse view of the central left lobe shows the

tumor (*) obstructing the distal left hepatic duct (arrow) and an aberrant segment 4 duct (arrowhead). (C) Coronal T2-weighted MRI conirms the

ultrasound indings of the central tumor obstructing the left hepatic (arrow) and aberrant segment 4 ducts (arrowhead). (D) Transverse image of

the porta hepatis depicts the tumor (*) narrowing the right portal vein and displacing branches of the right hepatic artery (arrow). (E) Doppler image

(same plane as D) conirms the right hepatic artery involvement. (F) Corresponding CT image in the arterial phase also shows intimate contact of

tumor (*) with right hepatic artery branches (arrow). The tumor did not extend deep into the left lobe, and the main and left hepatic arteries and

portal vein were not involved; therefore the patient underwent an extended right-sided hepatectomy.

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