Question 1977
{"accessible":true,"alternatives":[{"id":9839,"text":"ethmoid bulla"},{"id":9840,"text":"hiatus semilunaris"},{"id":9841,"text":"infundibulum"},{"id":9842,"text":"maxillary ostium"},{"id":9843,"text":"sphenoethmoidal recess"}],"archived":false,"correctAlternativeId":9840,"explanation":"\u003cp\u003eThe hiatus semilunaris is located within the lateral wall of the nasal cavity and is a combined drainage pathway for the frontal sinus, maxillary sinus and anterior ethmoid air cells. It is located at the medial end of the infundibulum which is depicted with the dotted line.\u003c/p\u003e\u003cp\u003eThe star indicates the location of the maxillary ostium.\u003c/p\u003e\u003cp\u003eThe ethmoid bulla is the air cell located directly superior and lateral to the infundibulum.\u003c/p\u003e\u003cp\u003eThe sphenoethmoidal recess is not seen on this image as it is located more posteriorly and drains the sphenoid sinuses and posterior ethmoid air cells to the superior meatus of the nasal cavity.\u0026nbsp;\u0026nbsp;\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eReference:\u003c/strong\u003e\u003c/p\u003e\u003cp\u003e1. Hoang JK, Eastwood JD, Tebbit CL, Glastonbury CM. Multiplanar sinus CT: a systematic approach to imaging before functional endoscopic sinus surgery. AJR Am J Roentgenol. 2010 Jun;194(6):W527-36. doi: 10.2214/AJR.09.3584. PMID: 20489073\u003c/p\u003e\u003cp\u003e\u0026nbsp;\u003c/p\u003e","id":1977,"imageUrl":"https://prod-images-static.radiopaedia.org/multiple_choice_questions/359/sinus_anatomy.001_big_gallery.jpeg","imageAttribution":{"kind":"external","attribution":"Jenny Hoang"},"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/1977","nextQuestionPath":null,"relatedArticles":[{"id":27335,"title":"Ostiomeatal complex","link":"/articles/ostiomeatal-complex?lang=us"},{"id":46557,"title":"Sphenoethmoidal recess","link":"/articles/sphenoethmoidal-recess?lang=us"},{"id":57127,"title":"Maxillary ostium","link":"/articles/maxillary-ostium?lang=us"},{"id":57801,"title":"Hiatus semilunaris","link":"/articles/hiatus-semilunaris?lang=us"},{"id":59403,"title":"Ethmoid bulla","link":"/articles/ethmoid-bulla?lang=us"}],"alsoUsedIn":[{"id":986,"kind":"Course","title":"2021 Virtual Conference Private Use - page 986","link":"https://radiopaedia.org/courses/2021-virtual-conference-private-use/pages/986"},{"id":986,"kind":"Course","title":"Radiopaedia 2021 - isoCME - page 986","link":"https://radiopaedia.org/courses/radiopaedia-2021-isocme/pages/986"},{"id":986,"kind":"Course","title":"2022 Virtual Conference Private Use - page 986","link":"https://radiopaedia.org/courses/2022-virtual-conference-private-use/pages/986"},{"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":19,"kind":"LiveSchedule","title":"19","link":"https://radiopaedia.org/admin/live_schedules/19"},{"id":876,"kind":"Course","title":"2021 Virtual Conference Private Use - page 876","link":"https://radiopaedia.org/courses/2021-virtual-conference-private-use/pages/876"},{"id":876,"kind":"Course","title":"Radiopaedia 2021 - isoCME - page 876","link":"https://radiopaedia.org/courses/radiopaedia-2021-isocme/pages/876"},{"id":876,"kind":"Course","title":"Head \u0026 Neck Lectures - page 876","link":"https://radiopaedia.org/courses/head-neck-lectures/pages/876"}],"stem":"\u003cp\u003eWhich\u0026nbsp;component of the ostiomeatal complex is\u0026nbsp;marked with the white circle on this image?\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/1977"}],"attemptsPercentages":[{"alternativeId":"9841","percentage":45},{"alternativeId":"9839","percentage":2},{"alternativeId":"9843","percentage":2},{"alternativeId":"9840","percentage":37},{"alternativeId":"9842","percentage":14}],"promptToLogin":false,"questionManager":false,"articleId":"middle-meatus"}