Question 2290
{"accessible":true,"alternatives":[{"id":11340,"text":"complete atelectasis left lung"},{"id":11341,"text":"complete consolidation left lung"},{"id":11342,"text":"malignant pleural effusion"},{"id":11343,"text":"parapneumonic pleural effusion"}],"archived":false,"correctAlternativeId":11342,"explanation":"\u003cp\u003eAlthough all of these options can cause complete opacification of a hemithorax (\"white-out\"), by far the two most common reasons for hemithorax opacification are massive effusion (malignant in the vast majority of cases) and complete atelectasis. \u003c/p\u003e\u003cp\u003eOf these two options, only effusion causes shift of the mediastinum (note rightward tracheal displacement) to the opposite side.\u003c/p\u003e","id":2290,"imageUrl":"https://prod-images-static.radiopaedia.org/images/54764616/947072b669718ddc8523fffe2f7f6373c03fb12a55e5e7da03d5f7757f2ee573_big_gallery.jpeg","imageAttribution":{"kind":"case","rID":88288},"imageAttributionCaseInfo":{"title":"Massive pleural effusion with mediastinal shift","contributor_name":"Ian Bickle","contributor_param":"clonvara","case_rid":88288,"case_param":"massive-pleural-effusion-with-mediastinal-shift-1"},"firstQuestionPath":"/questions/2290","nextQuestionPath":"/articles/hemithorax-white-out-differential/questions/2210","relatedArticles":[],"alsoUsedIn":[{"id":1354,"kind":"Course","title":"2022 Virtual Conference Private Use - page 1354","link":"https://radiopaedia.org/courses/2022-virtual-conference-private-use/pages/1354"},{"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":168,"kind":"LiveSchedule","title":"168","link":"https://radiopaedia.org/admin/live_schedules/168"},{"id":1294,"kind":"Course","title":"2022 Virtual Conference Private Use - page 1294","link":"https://radiopaedia.org/courses/2022-virtual-conference-private-use/pages/1294"},{"id":1294,"kind":"Course","title":"Chest Lectures - page 1294","link":"https://radiopaedia.org/courses/chest-lectures/pages/1294"}],"stem":"\u003cp\u003eWhat is the most likely reason for complete opacification of this patient's\u0026nbsp;left hemithorax?\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/2290"}],"attemptsPercentages":[{"alternativeId":"11341","percentage":6},{"alternativeId":"11340","percentage":7},{"alternativeId":"11342","percentage":71},{"alternativeId":"11343","percentage":17}],"promptToLogin":false,"questionManager":false,"articleId":"hemithorax-white-out-differential"}