Question 2229
{"accessible":false,"alternatives":[{"id":11038,"text":"endosteal scalloping involving more than 2/3 of cortical thickness\r\n"},{"id":11039,"text":"increased uptake on bone scan\r\n\r\n"},{"id":11040,"text":"pain "},{"id":11041,"text":"size over 5-6 cm"},{"id":11042,"text":"young adult\r\n\r\n"}],"archived":false,"correctAlternativeId":11042,"explanation":"\u003cp\u003e\u003ca href=\"/articles/enchondroma\"\u003eEnchondromas\u003c/a\u003e\u0026nbsp;commonly appear in young adults while \u003ca href=\"/articles/chondrosarcoma\"\u003echondrosarcomas\u003c/a\u003e (including low grade chondrosarcomas)\u0026nbsp;tend to appear in middle-aged patients. Other features that favour chondrosarcoma over enchondroma include:\u003c/p\u003e\u003cul\u003e\n\u003cli\u003esize over 5-6 cm\u003c/li\u003e\n\u003cli\u003ecortical breach\u003c/li\u003e\n\u003cli\u003edeep\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/endosteal-scalloping\"\u003eendosteal scalloping\u003c/a\u003e\u0026nbsp;involving \u0026gt;2/3 of cortical thickness\u003c/li\u003e\n\u003cli\u003e\n\u003ca href=\"https://radiopaedia.org/articles/permeative-process-in-bone\"\u003epermeative\u003c/a\u003e\u0026nbsp;or\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/permeative-process-in-bone\"\u003emoth-eaten\u003c/a\u003e\u0026nbsp;bone appearance\u003c/li\u003e\n\u003cli\u003esoft tissue mass beyond bone\u003c/li\u003e\n\u003cli\u003eincreased uptake on bone scan\u003c/li\u003e\n\u003cli\u003epain in the absence of fracture\u003c/li\u003e\n\u003c/ul\u003e","id":2229,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2234","nextQuestionPath":"/articles/enchondroma/questions/2227","relatedArticles":[{"id":1121,"title":"Chondrosarcoma","link":"/articles/chondrosarcoma?lang=gb"},{"id":6245,"title":"Enchondroma vs low grade chondrosarcoma","link":"/articles/enchondroma-vs-low-grade-chondrosarcoma-3?lang=gb"}],"alsoUsedIn":[{"id":1119,"kind":"RestrictedPage","title":"Page 1119 (in no courses)","link":"https://radiopaedia.org/admin/restricted_pages/1119"},{"id":2086,"kind":"Course","title":"2024 Virtual Conference Private Use - page 2086","link":"https://radiopaedia.org/courses/2024-virtual-conference-private-use/pages/2086"},{"id":2086,"kind":"Course","title":"X-ray Interpretation: Bone Lesions Peer Review - page 2086","link":"https://radiopaedia.org/courses/x-ray-interpretation-bone-lesions-peer-review/pages/2086"},{"id":2086,"kind":"Course","title":"X-ray Interpretation: Bone Lesions - page 2086","link":"https://radiopaedia.org/courses/x-ray-interpretation-bone-lesions/pages/2086"}],"stem":"\u003cp\u003eX-ray reveals a lucent proximal femoral medullary lesion\u0026nbsp;containing\u0026nbsp;rings and arcs calcification\u0026nbsp;in keeping with a chondroid matrix.\u0026nbsp; Which of the following would\u0026nbsp;\u003cstrong\u003eNOT\u003c/strong\u003e\u0026nbsp;favour chondrosarcoma over enchondroma?\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/2229"}],"attemptsPercentages":[{"alternativeId":"11040","percentage":6},{"alternativeId":"11042","percentage":75},{"alternativeId":"11041","percentage":3},{"alternativeId":"11039","percentage":9},{"alternativeId":"11038","percentage":7}],"promptToLogin":false,"questionManager":false,"articleId":"enchondroma"}