Question 423
{"accessible":false,"alternatives":[{"id":2121,"text":"5%"},{"id":2122,"text":"20%"},{"id":2123,"text":"50%"},{"id":2124,"text":"80%"},{"id":2125,"text":"95%"}],"archived":false,"correctAlternativeId":2122,"explanation":"\u003cp\u003eSome radiopaque gallstones may be seen on plain film:\u003c/p\u003e\u003cul\u003e\u003cli\u003egallstones are radiopaque only in 15-20% of cases\u003c/li\u003e\u003cli\u003emay have a laminated appearance\u0026nbsp;\u003c/li\u003e\u003cli\u003emay have a faceted outline\u0026nbsp;\u003c/li\u003e\u003cli\u003emay show a\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/mercedes-benz-sign-gallbladder\"\u003eMercedes-Benz sign\u003c/a\u003e: radiopaque outline with lucent center\u003c/li\u003e\u003c/ul\u003e","id":423,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2404","nextQuestionPath":"/articles/gallstones-1/questions/422","relatedArticles":[],"alsoUsedIn":[{"id":178,"kind":"Course","title":"Cases in Radiology: Abdomen - page 178","link":"https://radiopaedia.org/courses/cases-in-radiology-abdomen/pages/178"},{"id":166,"kind":"Course","title":"Abdominal Emergency Radiology Course - page 166","link":"https://radiopaedia.org/courses/abdominal-emergency-radiology-course-online/pages/166"}],"stem":"\u003cp\u003eGallstones are classically described as radiopaque on plain film in what proportion of case?\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/423"}],"attemptsPercentages":[{"alternativeId":"2124","percentage":15},{"alternativeId":"2125","percentage":3},{"alternativeId":"2121","percentage":11},{"alternativeId":"2122","percentage":54},{"alternativeId":"2123","percentage":18}],"promptToLogin":false,"questionManager":false,"articleId":"gallstones"}