Question 552
{"accessible":false,"alternatives":[{"id":2768,"text":"basal linear atelectasis"},{"id":2769,"text":"Chilaiditi syndrome"},{"id":2770,"text":"emphysematous pyelonephritis"},{"id":2771,"text":"pneumobilia"},{"id":2772,"text":"properitoneal fat stripe"}],"archived":false,"correctAlternativeId":2770,"explanation":"\u003cp\u003e\u003cstrong\u003ePseudopneumoperitoneum\u003c/strong\u003e\u0026nbsp;describes any gas within the\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/abdominal-cavity\"\u003eabdominal cavity\u003c/a\u003e\u0026nbsp;that masquerades as free intraperitoneal gas or\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/pneumoperitoneum\"\u003epneumoperitoneum\u003c/a\u003e\u0026nbsp;when it is in fact contained within an organ. Correctly identifying\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/pneumoperitoneum\"\u003epneumoperitoneum\u003c/a\u003e\u0026nbsp;is important, but making the diagnosis in error may lead to further unnecessary investigation and possible treatment.\u003c/p\u003e\u003cp\u003eCauses include of pseudopneumoperitoneum include:\u003c/p\u003e\u003cul\u003e\u003cli\u003ebasal linear\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/atelectasis\"\u003eatelectasis\u003c/a\u003e\u003c/li\u003e\u003cli\u003epneumomediastinum (mimicking\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/cupola-sign\"\u003ecupola sign\u003c/a\u003e)\u003c/li\u003e\u003cli\u003e\u003ca href=\"https://radiopaedia.org/articles/chilaiditis-syndrome\"\u003eChilaiditi syndrome\u003c/a\u003e\u003c/li\u003e\u003cli\u003ediaphragmatic undulation\u003c/li\u003e\u003cli\u003egas within skin folds\u003c/li\u003e\u003cli\u003e\u003ca href=\"https://radiopaedia.org/articles/pneumobilia\"\u003ebiliary\u003c/a\u003e,\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/portal-venous-gas\"\u003eportal vein\u003c/a\u003e\u0026nbsp;or\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/intramural-gas\"\u003ebowel wall gas\u003c/a\u003e\u003c/li\u003e\u003cli\u003efat within the\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/missing?article%5Btitle%5D=subdiaphragmatic-space\"\u003esubdiaphragmatic space\u003c/a\u003e\u0026nbsp;or the\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/missing?article%5Btitle%5D=ligamentum-teres\"\u003eligamentum teres\u003c/a\u003e\u003c/li\u003e\u003cli\u003e\u003ca href=\"https://radiopaedia.org/articles/properitoneal-fat\"\u003eproperitoneal fat stripe\u003c/a\u003e\u003c/li\u003e\u003c/ul\u003e\u003cp\u003eEmphysematous pyelonephritis will cause \u003ca href=\"/articles/pneumoretroperitoneum\"\u003epneumoretroperitoneum\u003c/a\u003e.\u003c/p\u003e","id":552,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/552","nextQuestionPath":null,"relatedArticles":[],"alsoUsedIn":[],"stem":"\u003cp\u003eWhich of these is\u0026nbsp;\u003cstrong\u003eNOT\u003c/strong\u003e a known cause of\u0026nbsp;pseudopneumoperitoneum?\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/552"}],"attemptsPercentages":[{"alternativeId":"2770","percentage":48},{"alternativeId":"2772","percentage":11},{"alternativeId":"2769","percentage":8},{"alternativeId":"2768","percentage":15},{"alternativeId":"2771","percentage":18}],"promptToLogin":false,"questionManager":false,"articleId":"pseudopneumoperitoneum"}