There are 4 subtypes of hepatocellular adenoma: inflammatory hepatocellular adenoma, hepatocyte-nuclear-factor-1-alpha (HNF-1alpha-mutated) hepatocellular adenoma, beta-catenin-mutated hepatocellular adenomas and unclassified. 

The most common is the inflammatory subtype and is usually seen in young women with obesity, hepatic steatosis (as in this case), diabetes mellitus and alcohol abuse.  Classic appearance is T2 hyperintensity with delayed, persistent, peripheral contrast enhancement with an hepatocyte agent (Primovist) as in this case.  Differential diagnosis is focal nodular hyperplasia.