FIGURE 5. Schematic drawing of retrohepatic dissection. Line A indicates a recommended dissection course. When a resistance-free space cannot be found in the upper third of this course (dashed ellipse), there is a risk of injuring accessory hepatic veins. B, A dissecting course heading for a typical PrCV. C, A dissecting course heading for a nontypical PrCV. LHV, MHV, and RHV, left, middle, and right hepatic veins, respectively; IRHV and MRHV, inferior and middle right hepatic veins, respectively; PrCV, proper hepatic vein for the caudate lobe; N-PrCV, nontypical PrCV.