Question 2473
{"accessible":true,"alternatives":[{"id":12152,"text":"falciform ligament sign"},{"id":12153,"text":"football sign"},{"id":12154,"text":"lateral umbilical ligament sign"},{"id":12155,"text":"telltale triangle sign"},{"id":12156,"text":"Rigler sign"}],"archived":false,"correctAlternativeId":12156,"explanation":"\u003cp\u003eIn places, the bowel wall is clearly delineated, indicating free air on both sides of the bowel wall, known as the Rigler sign. The football sign is usually seen in children with a massive pneumoperitoneum and is often accompanied by the falciform ligament and lateral umbilical ligament sign, due to air outlining these structures. The telltale triangle sign refers to the polygonal shapes formed by free air trapped between bowel loops or between bowel and the abdominal wall.\u003c/p\u003e\u003cp\u003e\u003c/p\u003e","id":2473,"imageUrl":"https://prod-images-static.radiopaedia.org/images/58366094/0._big_gallery.jpeg","imageAttribution":{"kind":"case","rID":99288},"imageAttributionCaseInfo":{"title":"Pneumoperitoneum - Rigler sign","contributor_name":"Leonardo Lustosa","contributor_param":"leonardo-miranda-lustosa","case_rid":99288,"case_param":"pneumoperitoneum-rigler-sign-1"},"firstQuestionPath":"/questions/2473","nextQuestionPath":null,"relatedArticles":[{"id":6165,"title":"Pneumoperitoneum","link":"/articles/pneumoperitoneum?lang=us"},{"id":19615,"title":"Falciform ligament sign","link":"/articles/falciform-ligament-sign-1?lang=us"},{"id":48934,"title":"Inverted \"V\" sign (pneumoperitoneum)","link":"/articles/inverted-v-sign-pneumoperitoneum?lang=us"},{"id":6901,"title":"Football sign (pneumoperitoneum)","link":"/articles/football-sign-pneumoperitoneum?lang=us"},{"id":59237,"title":"Telltale triangle sign","link":"/articles/telltale-triangle-sign?lang=us"}],"alsoUsedIn":[{"id":1350,"kind":"Course","title":"2022 Virtual Conference Private Use - page 1350","link":"https://radiopaedia.org/courses/2022-virtual-conference-private-use/pages/1350"},{"id":1200,"kind":"Course","title":"2022 Virtual Conference Private Use - page 1200","link":"https://radiopaedia.org/courses/2022-virtual-conference-private-use/pages/1200"},{"id":248,"kind":"LiveSchedule","title":"248","link":"https://radiopaedia.org/admin/live_schedules/248"},{"id":162,"kind":"LiveSchedule","title":"162","link":"https://radiopaedia.org/admin/live_schedules/162"},{"id":1287,"kind":"Course","title":"2022 Virtual Conference Private Use - page 1287","link":"https://radiopaedia.org/courses/2022-virtual-conference-private-use/pages/1287"},{"id":1287,"kind":"Course","title":"X-ray \u0026 Ultrasound Lectures - page 1287","link":"https://radiopaedia.org/courses/xray-lectures/pages/1287"}],"stem":"\u003cp\u003eWhich sign of pneumoperitoneum is seen on this abdominal radiograph?\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/2473"}],"attemptsPercentages":[{"alternativeId":"12156","percentage":79},{"alternativeId":"12154","percentage":2},{"alternativeId":"12155","percentage":11},{"alternativeId":"12153","percentage":4},{"alternativeId":"12152","percentage":4}],"promptToLogin":false,"questionManager":false,"articleId":"rigler-sign-bowel"}