Figure 3a. Thrombosed and sclerosed PV with large collateral vein used for anastomosis. (a) Transverse enhanced CT scan. No PV, only a cordlike structure, could be identified at the porta hepatis at CT or surgery. A dilated coronary vein (arrow) was anastomosed to the donor PV at OLT. (b) More caudal transverse CT scan shows thrombus (arrow) within the superior mesenteric vein that prevented the use of an interposition venous graft.