The caudate lobe is a (physiologically) independent part of the liver, supplied by the right and left hepatic artery and portal vein. Blood from the caudate lobe drains directly into the vena cava.It is also known as the lobule of Spiegel. The caudate section of the liver is connected to the right lobe by a narrow bridge called the caudate process. This lies behind the porta hepatis, a deep crease in the liver.Below this is a small round appendage called the papillary process.he caudate section of the liver is connected to the right lobe by a narrow bridge called the caudate process. This lies behind the porta hepatis, a deep crease in the liver.