Question 1708
{"accessible":true,"alternatives":[{"id":8489,"text":"group 3"},{"id":8490,"text":"group 4"},{"id":8487,"text":"sonic hedgehog (SHH)"},{"id":8488,"text":"wingless (WNT)"}],"archived":false,"correctAlternativeId":8487,"explanation":"\u003cp\u003eThere are two enhancing cerebellar intra-axial masses of lateral location (right larger than left) with a mass effect on the brainstem and 4th ventricle.\u0026nbsp;The adjacent lateral/sigmoid sinuses are patent.\u0026nbsp;\u003c/p\u003e\u003cp\u003eMedulloblastoma - sonic hedgehog (SHH) subgroup tumors\u003cstrong\u003e\u0026nbsp;\u003c/strong\u003eare considered as the second most common\u0026nbsp;medulloblastoma\u0026nbsp;and most commonly seen in adults and infants. They are most frequently located laterally within the cerebellar hemispheres as in this case, which was pathologically proven after surgical excision.\u003c/p\u003e\u003cp\u003e\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003c/p\u003e","id":1708,"imageUrl":"https://prod-images-static.radiopaedia.org/multiple_choice_questions/198/1_big_gallery.jpeg","imageAttribution":{"kind":"case","rID":80919},"imageAttributionCaseInfo":{"title":"Medulloblastoma - SHH subgroup","contributor_name":"Ammar Haouimi","contributor_param":"ammar-haouimi","case_rid":80919,"case_param":"medulloblastoma-shh-subgroup-2"},"firstQuestionPath":"/questions/1708","nextQuestionPath":"/articles/medulloblastoma-group-4-3/questions/1693","relatedArticles":[{"id":5335,"title":"Medulloblastoma","link":"/articles/medulloblastoma?lang=us"},{"id":41026,"title":"Medulloblastoma, SHH-activated","link":"/articles/medulloblastoma-shh-activated?lang=us"},{"id":41027,"title":"Medulloblastoma, WNT-activated","link":"/articles/medulloblastoma-wnt-activated?lang=us"},{"id":41025,"title":"Medulloblastoma, group 3","link":"/articles/medulloblastoma-group-3-3?lang=us"}],"alsoUsedIn":[],"stem":"\u003cp\u003eA 20 year-old female, presents with raised intracranial pressure. What is the most likely subgroup of medulloblastoma is shown on this postcontrast axial T1 image?\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/1708"}],"attemptsPercentages":[{"alternativeId":"8488","percentage":19},{"alternativeId":"8487","percentage":70},{"alternativeId":"8490","percentage":6},{"alternativeId":"8489","percentage":5}],"promptToLogin":false,"questionManager":false,"articleId":"medulloblastoma-group-4"}