Stentless porcine valves in the right ventricular outflow tract: improved durability?
Stentless porcine valves function well in the pulmonary position over the intermediate-term and are associated with low rates of reintervention in patients requiring a>19 mm valve or valved conduit. Longer-term follow-up and comparison with other alternatives will be necessary to determine if these valves are superior to commonly used allograft or bovine jugular venous valved conduits.
CA19-9 response is a robust predictor of survival in patients with inoperable bile duct cancer in four independent data sets.