Question 2072
{"accessible":false,"alternatives":[{"id":10285,"text":"a high percentage of hepatocellular adenomas are hypointense compared to normal background liver in the hepatobiliary phase of imaging with liver-specific MRI contrast agents."},{"id":10286,"text":"b-catenin mutated HCAs have the highest risk of malignant transformation."},{"id":10287,"text":"HNF1a-inactivated adenomas contain increased amounts of fat compared with normal liver."},{"id":10288,"text":"the atoll sign is typically seen with b-catenin mutated adenomas."},{"id":10289,"text":"the inflammatory subtype is the most likely to present with rupture and bleeding."}],"archived":false,"correctAlternativeId":10288,"explanation":"\u003cp\u003eThe atoll sign in hepatic imaging has been described when a liver lesion shows a peripheral rim of high T2 signal intensity with the center of the lesion appearing isointense to the background of non-cirrhotic liver on T2WI mimicking an atoll. It is considered a characteristic sign of an inflammatory hepatic adenoma but is only seen in about one-third of cases. It probably represents dilated sinusoids within the periphery of the adenoma.\u003c/p\u003e","id":2072,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2072","nextQuestionPath":null,"relatedArticles":[{"id":1440,"title":"Hepatic adenoma","link":"/articles/hepatic-adenoma?lang=us"},{"id":35198,"title":"HNF 1 alpha mutated hepatic adenoma","link":"/articles/hnf-1-alpha-mutated-hepatic-adenoma?lang=us"},{"id":39503,"title":"Atoll sign (liver MRI)","link":"/articles/atoll-sign-liver-mri-2?lang=us"}],"alsoUsedIn":[{"id":979,"kind":"Course","title":"2021 Virtual Conference Private Use - page 979","link":"https://radiopaedia.org/courses/2021-virtual-conference-private-use/pages/979"},{"id":979,"kind":"Course","title":"Radiopaedia 2021 - isoCME - page 979","link":"https://radiopaedia.org/courses/radiopaedia-2021-isocme/pages/979"},{"id":979,"kind":"Course","title":"2022 Virtual Conference Private Use - page 979","link":"https://radiopaedia.org/courses/2022-virtual-conference-private-use/pages/979"},{"id":970,"kind":"RestrictedPage","title":"Page 970 (in no courses)","link":"https://radiopaedia.org/admin/restricted_pages/970"},{"id":955,"kind":"RestrictedPage","title":"Page 955 (in no courses)","link":"https://radiopaedia.org/admin/restricted_pages/955"},{"id":1,"kind":"LiveSchedule","title":"1","link":"https://radiopaedia.org/admin/live_schedules/1"},{"id":7,"kind":"LiveSchedule","title":"7","link":"https://radiopaedia.org/admin/live_schedules/7"},{"id":884,"kind":"Course","title":"2021 Virtual Conference Private Use - page 884","link":"https://radiopaedia.org/courses/2021-virtual-conference-private-use/pages/884"},{"id":884,"kind":"Course","title":"Radiopaedia 2021 - isoCME - page 884","link":"https://radiopaedia.org/courses/radiopaedia-2021-isocme/pages/884"},{"id":884,"kind":"Course","title":"Abdominal Lectures - page 884","link":"https://radiopaedia.org/courses/abdominal-lectures/pages/884"}],"stem":"\u003cp\u003eWhich of the following is \u003cstrong\u003eNOT TRUE\u003c/strong\u003e regarding hepatocellular adenomas (HCAs)?\u003c/p\u003e","menuLinks":[{"text":"Report problem with question","url":"https://docs.google.com/forms/d/e/1FAIpQLSfO3soWYhOjJ7yErSysyCe5V4A1CqW7WK3rDA7MtAkecMGqNw/viewform?entry.1624461248\u0026entry.553583435=https://radiopaedia.org/questions/2072"}],"attemptsPercentages":[{"alternativeId":"10285","percentage":11},{"alternativeId":"10289","percentage":7},{"alternativeId":"10287","percentage":7},{"alternativeId":"10288","percentage":66},{"alternativeId":"10286","percentage":9}],"promptToLogin":false,"questionManager":false,"articleId":"beta-catenin-mutated-hepatic-adenoma"}