"A key but non‑specific clue is iso to hyperintensity on the hepatobiliary phase after hepatocyte specific contrast, reflecting preserved or increased OATP expression. This pattern is observed in the majority of beta catenin mutated (particularly exon 3 mutated) adenomas and more frequently than in other subtypes, although a subset of inflammatory and mixed inflammatory/beta catenin lesions can show similar hepatobiliary phase uptake 4-6."
"HNF 1 alpha mutated hepatic adenoma"
"On MRI, lesions are typically iso to hypointense on T1‑weighted images and iso to mildly hyperintense on T2‑weighted images, with arterial phase hyperenhancement and variable washout on portal venous and delayed phases; intralesional haemorrhage or necrosis may be seen in larger tumours 3,4."