Stepwise evaluation of liver sectors and liver segments by endoscopic ultrasound

Figure 13 The caudate lobe from different stations of imaging. A: An image of the caudate lobe through the portal vein in front of the inferior vena cava from the duodenal bulb; B: An image of the caudate lobe between the portal vein and the inferior vena cava from the descending duodenum; C: The caudate process acts as a two-way window for imaging of the right and left lobes of the liver in endoscopic ultrasonography. The red circle shows the approximate area of gastric impression on the visceral surface of the left lobe of the liver and shows that the imaging of the right lobe is possible through the caudate lobe and caudate process. The blue circle shows the approximate area of duodenal impression on the visceral surface of the right lobe of the liver and that the imaging of the left lobe is possible through the caudate lobe and caudate process; D: An image of the left lobe of the liver through the caudate lobe from the duodenal bulb. IVC: Inferior vena cava; PV: Portal vein; CBD: Common bile duct; CL: Caudate lobe; LPV: Left branch of the portal vein.