Question 1067
{"accessible":true,"alternatives":[{"id":5349,"text":"A"},{"id":5350,"text":"B"},{"id":5351,"text":"both"},{"id":5352,"text":"neither"}],"archived":false,"correctAlternativeId":5350,"explanation":"\u003cp\u003e\u003cstrong\u003ePatient B\u003c/strong\u003e is a child with a lytic skull lesion\u0026nbsp;showing the characteristic \u003ca href=\"/articles/hole-within-a-hole-sign-1\"\u003ebevelled edge\u003c/a\u003e appearance of \u003ca href=\"/articles/langerhans-cell-histiocytosis\"\u003eLangerhans cell histiocytosis\u003c/a\u003e (eosinophillic granuloma). \u003cstrong\u003ePatient A\u003c/strong\u003e has cystic lung disease characterized by perfectly round cysts that distributed throughout the lung without sparing of the costophrenic recesses. This appearance is in keeping with \u003ca href=\"/articles/lymphangioleiomyomatosis-1\"\u003eLymphangioleiomyomatosis\u003c/a\u003e (or tuberous sclerosis) but is not typical of Langerhan cell histiocytosis, which typical produces more irregularly shaped cysts with sparing of the costophrenic\u0026nbsp;recesses.\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eFrom:\u003c/strong\u003e\u0026nbsp;\u003ca href=\"https://radiopaedia.org/courses/radiology-review-course-online\"\u003eRadiology Review Course - Online\u003c/a\u003e\u003c/p\u003e","id":1067,"imageUrl":"https://prod-images-static.radiopaedia.org/multiple_choice_questions/675/images-for-mcqs-2-2_big_gallery.jpeg","imageAttribution":{"kind":"external","attribution":"Case A: Tuberous sclerosis complex with lymphangioleiomyomatosis (rID: 20712) contributed by Charlie Chia-Tsong Hsu. Case B: Langerhans cell histiocytosis (rID: 28345) contributed by Prashant Mudgal."},"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/1099","nextQuestionPath":"/articles/langerhans-cell-histiocytosis/questions/904","relatedArticles":[],"alsoUsedIn":[{"id":232,"kind":"Course","title":"Radiology Review Course - Melbourne - page 232","link":"https://radiopaedia.org/courses/radiology-review-course-melbourne-2019/pages/232"},{"id":232,"kind":"Course","title":"Radiology Review Course - Melbourne - page 232","link":"https://radiopaedia.org/courses/radiology-review-course-melbourne-2018/pages/232"},{"id":232,"kind":"Course","title":"Radiology Review Course - Melbourne - page 232","link":"https://radiopaedia.org/courses/radiology-review-course-melbourne-2020/pages/232"},{"id":232,"kind":"Course","title":"Radiology Review Course - page 232","link":"https://radiopaedia.org/courses/radiology-review-course-online/pages/232"}],"stem":"\u003cp\u003eWhich patient has Langerhans cell histiocytosis?\u0026nbsp;\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/1067"}],"attemptsPercentages":[{"alternativeId":"5350","percentage":37},{"alternativeId":"5351","percentage":48},{"alternativeId":"5349","percentage":13},{"alternativeId":"5352","percentage":2}],"promptToLogin":false,"questionManager":false,"articleId":"langerhans-cell-histiocytosis"}