Question 1564
{"accessible":false,"alternatives":[{"id":7794,"text":"amyloidosis"},{"id":7795,"text":"Erdheim-Chester disease"},{"id":7796,"text":"extramedullary hematopoiesis"},{"id":7797,"text":"IgG4-related sclerosing disease"}],"archived":false,"correctAlternativeId":7795,"explanation":"\u003cp\u003eErdheim-Chester disease is a non-Langerhans cell histiocytosis which can cause infiltration of multiple organ systems throughout the body. In the abdomen, the most classic sign is the \"hairy kidney\" sign.\u0026nbsp;\u003c/p\u003e","id":1564,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/1564","nextQuestionPath":"/articles/extramedullary-haematopoiesis/questions/1343","relatedArticles":[{"id":1297,"title":"Erdheim-Chester disease","link":"/articles/erdheim-chester-disease?lang=us"},{"id":6720,"title":"Amyloidosis","link":"/articles/amyloidosis?lang=us"},{"id":17290,"title":"IgG4-related disease","link":"/articles/igg4-related-disease?lang=us"}],"alsoUsedIn":[{"id":223,"kind":"Course","title":"Cancer Mimics in the Abdomen \u0026 Pelvis","link":"https://radiopaedia.org/courses/cancer-mimics-in-the-abdomen-and-pelvis"},{"id":981,"kind":"Course","title":"2021 Virtual Conference Private Use - page 981","link":"https://radiopaedia.org/courses/2021-virtual-conference-private-use/pages/981"},{"id":981,"kind":"Course","title":"Radiopaedia 2021 - isoCME - page 981","link":"https://radiopaedia.org/courses/radiopaedia-2021-isocme/pages/981"},{"id":981,"kind":"Course","title":"2022 Virtual Conference Private Use - page 981","link":"https://radiopaedia.org/courses/2022-virtual-conference-private-use/pages/981"},{"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":9,"kind":"LiveSchedule","title":"9","link":"https://radiopaedia.org/admin/live_schedules/9"},{"id":651,"kind":"Course","title":"Lectures by Michael P Hartung - page 651","link":"https://radiopaedia.org/courses/lectures-by-michael-p-hartung/pages/651"},{"id":651,"kind":"Course","title":"Radiopaedia 2020 - Lectures Only - page 651","link":"https://radiopaedia.org/courses/radiopaedia-2020-exclusive/pages/651"},{"id":651,"kind":"Course","title":"2020 Virtual Conference Private Use - page 651","link":"https://radiopaedia.org/courses/2020-virtual-conference-private-use/pages/651"},{"id":856,"kind":"Course","title":"2021 Virtual Conference Private Use - page 856","link":"https://radiopaedia.org/courses/2021-virtual-conference-private-use/pages/856"},{"id":856,"kind":"Course","title":"Radiopaedia 2021 - isoCME - page 856","link":"https://radiopaedia.org/courses/radiopaedia-2021-isocme/pages/856"},{"id":856,"kind":"Course","title":"Abdominal Lectures - page 856","link":"https://radiopaedia.org/courses/abdominal-lectures/pages/856"}],"stem":"\u003cp\u003eWhich of the following is characterized as a histiocytosis?\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/1564"}],"attemptsPercentages":[{"alternativeId":"7795","percentage":82},{"alternativeId":"7794","percentage":4},{"alternativeId":"7797","percentage":9},{"alternativeId":"7796","percentage":5}],"promptToLogin":false,"questionManager":false,"articleId":"extramedullary-hematopoiesis"}