Question 2239
{"accessible":true,"alternatives":[{"id":11088,"text":"A"},{"id":11089,"text":"B"},{"id":11090,"text":"C"},{"id":11091,"text":"A and B"},{"id":11092,"text":"A and C"},{"id":11093,"text":"B and C"}],"archived":false,"correctAlternativeId":11090,"explanation":"\u003cp\u003eX-ray 'C' shows a\u0026nbsp;cloudy white osteoid producing mass which has destroyed the cortex and grown out into the adjacent soft-tissues in keeping with an osteosarcoma. \u003c/p\u003e\u003cp\u003eX-ray 'A' reveals an expansile lesion within the proximal femur with a ground-glass matrix, cortical thinning\u0026nbsp;and mild bowing\u0026nbsp;typical of fibrous dysplasia. \u003c/p\u003e\u003cp\u003eX-ray 'B' shows a medullary lesion with rings and arcs calcification (chondroid matrix) in keeping with a\u0026nbsp;cartilage series lesion such as an\u0026nbsp;enchondroma.\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003e\u003c/p\u003e","id":2239,"imageUrl":"https://prod-images-static.radiopaedia.org/multiple_choice_questions/465/multi.001_big_gallery.jpeg","imageAttribution":{"kind":"external","attribution":"Case A: Fibrous dysplasia (rID: 14070) contributed by Roberto Schubert. Case B: Enchondroma - distal femur (rID: 73387) contributed by Mostafa El-Feky. Case C: Osteosarcoma (rID: 21433) contributed by Mohammad Osama Hussein Yonso."},"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2242","nextQuestionPath":"/articles/describing-a-bone-lesion/questions/2238","relatedArticles":[{"id":12121,"title":"Cartilaginous lesions","link":"/articles/cartilaginous-lesions?lang=us"},{"id":12122,"title":"Osteoid lesions","link":"/articles/osteoid-lesions?lang=us"},{"id":12120,"title":"Fibrous lesions","link":"/articles/fibrous-lesions?lang=us"}],"alsoUsedIn":[{"id":1094,"kind":"Course","title":"[TRIAL] X-ray Interpretation: Bone Lesions - page 1094","link":"https://radiopaedia.org/courses/trial-x-ray-interpretation-bone-lesions/pages/1094"},{"id":2061,"kind":"Course","title":"X-ray Interpretation: Bone Lesions - page 2061","link":"https://radiopaedia.org/courses/x-ray-interpretation-bone-lesions/pages/2061"},{"id":2061,"kind":"Course","title":"X-ray Interpretation: Bone Lesions Peer Review - page 2061","link":"https://radiopaedia.org/courses/x-ray-interpretation-bone-lesions-peer-review/pages/2061"}],"stem":"\u003cp\u003eWhich of these\u0026nbsp;bone lesions demonstrate\u0026nbsp;an osteoid matrix?\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/2239"}],"attemptsPercentages":[{"alternativeId":"11092","percentage":8},{"alternativeId":"11091","percentage":2},{"alternativeId":"11088","percentage":9},{"alternativeId":"11090","percentage":52},{"alternativeId":"11089","percentage":6},{"alternativeId":"11093","percentage":23}],"promptToLogin":false,"questionManager":false,"articleId":"describing-a-bone-lesion"}