Question 1069
{"accessible":true,"alternatives":[{"id":5357,"text":"A"},{"id":5358,"text":"B"},{"id":5359,"text":"both"},{"id":5360,"text":"neither"}],"archived":false,"correctAlternativeId":5357,"explanation":"\u003cp\u003e\u003cstrong\u003ePatient A\u003c/strong\u003e has a \u003ca href=\"/articles/mature-cystic-ovarian-teratoma\"\u003emature cystic teratoma of the ovary \u003c/a\u003ewith typical CT appearance of a round lesion with fat-fluid level and central soft-tissue plug. In this case it looks very much like a Pokeball! \u003cstrong\u003ePatient B\u003c/strong\u003e has a\u0026nbsp;\u003ca href=\"/articles/pericallosal-lipoma\"\u003etubulonodular pericallosal lipoma\u003c/a\u003e with peripheral calcification known as the \u003ca href=\"/articles/bracket-sign-pericallosal-lipoma\"\u003ebracket sign\u003c/a\u003e.\u0026nbsp;\u0026nbsp;It is really the characteristic location and pattern of calcification that allows it to be distinguished from an \u003ca href=\"/articles/intracranial-teratoma\"\u003eintracranial teratoma\u003c/a\u003e on this single CT slice.\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eFrom:\u003c/strong\u003e \u003ca href=\"https://radiopaedia.org/courses/radiology-review-course-online\"\u003eRadiology Review Course - Online\u003c/a\u003e\u003c/p\u003e","id":1069,"imageUrl":"https://prod-images-static.radiopaedia.org/multiple_choice_questions/677/images-for-mcqs-2-4_big_gallery.jpeg","imageAttribution":{"kind":"external","attribution":"Case A: Mature cystic ovarian teratoma (rID: 46899) contributed by Antoni Boscà. Case B: Corpus callosal lipoma - tubulonodular variety (rID: 6587) contributed by Paresh K Desai."},"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/1069","nextQuestionPath":null,"relatedArticles":[{"id":9216,"title":"Teratoma","link":"/articles/teratoma-1?lang=us"},{"id":4568,"title":"Intracranial teratoma","link":"/articles/intracranial-teratoma?lang=us"}],"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 a teratoma?\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/1069"}],"attemptsPercentages":[{"alternativeId":"5357","percentage":56},{"alternativeId":"5359","percentage":35},{"alternativeId":"5358","percentage":6},{"alternativeId":"5360","percentage":4}],"promptToLogin":false,"questionManager":false,"articleId":"ovarian-teratoma"}