Figure 7. Extension of clot into the superior mesenteric vein (SMV). Transverse enhanced CT scan shows that clot filled the PV (not shown) and extended caudally into the superior mesenteric vein (straight arrow). Note the edematous mesentery (arrowheads) and mesenteric varices (curved arrow). Thrombectomy and direct PV-to-PV anastomosis were performed.