 The purpose of this study is to determine if a fat emulsion comprised of omega-3 fatty acids, Omegaven, would be beneficial in the management of steatotic liver injury in parenteral nutrition PN by its inhibition of de novo lipogenesis, the reduction of arachidonic acid-derived inflammatory mediators, prevention of essential fatty acid deficiency through the presence of small amounts of arachidonic acid, and improved clearance of lipids from the serum. 