Question 2567
{"accessible":false,"alternatives":[{"id":12588,"text":"aortic arch"},{"id":12590,"text":"cricoid cartilage"},{"id":12592,"text":"left main bronchus"},{"id":12589,"text":"left pulmonary artery"},{"id":12591,"text":"oesophageal hiatus"}],"archived":false,"correctAlternativeId":12590,"explanation":"\u003cp\u003eThere are three normal oesophageal constrictions that should not be confused for pathological constrictions:\u003c/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003ecervical constriction\u003c/strong\u003e (narrowest point):\u0026nbsp;due to the cricoid cartilage at the level of C5/6\u003c/p\u003e\u003c/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003ethoracic constriction\u003c/strong\u003e: due to the aortic arch and left main bronchus at the level of T4/5\u003c/p\u003e\u003c/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cstrong\u003eabdominal constriction\u003c/strong\u003e: at the lower oesophageal sphincter and oesophageal hiatus at the level of T10/11\u003c/p\u003e\u003c/li\u003e\n\u003c/ul\u003e","id":2567,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2567","nextQuestionPath":null,"relatedArticles":[{"id":5762,"title":"Oesophageal hiatus","link":"/articles/oesophageal-hiatus?lang=gb"},{"id":49256,"title":"Pulmonary trunk","link":"/articles/pulmonary-trunk?lang=gb"},{"id":44514,"title":"Cricoid cartilage","link":"/articles/cricoid-cartilage?lang=gb"},{"id":27314,"title":"Oesophagus","link":"/articles/oesophagus?lang=gb"},{"id":45879,"title":"Left main bronchus","link":"/articles/left-main-bronchus?lang=gb"}],"alsoUsedIn":[],"stem":"\u003cp\u003eAt which level is the oesophagus narrowest?\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/2567"}],"attemptsPercentages":[{"alternativeId":"12588","percentage":19},{"alternativeId":"12589","percentage":4},{"alternativeId":"12590","percentage":50},{"alternativeId":"12591","percentage":19},{"alternativeId":"12592","percentage":7}],"promptToLogin":false,"questionManager":false,"articleId":"aortic-arch"}