Question 475
{"accessible":false,"alternatives":[{"id":2386,"text":"bilateral inferior quadrantanopia"},{"id":2387,"text":"bilateral superior quadrantanopia"},{"id":2388,"text":"bitemporal hemianopia"},{"id":2389,"text":"complete bilateral visual loss"},{"id":2390,"text":"homonymous hemianopia"},{"id":2391,"text":"monocular visual loss"}],"archived":false,"correctAlternativeId":2388,"explanation":"\u003cp\u003eA macroadenoma growing superiorly out of the pituitary fossa (or for that matter other pituitary region masses) will contact, elevate and compress the central part of the chiasm in most individuals. This central part carries fibers from the nasal retina, and thus results in the classical bitemporal hemianopia.\u0026nbsp;\u003c/p\u003e","id":475,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/1444","nextQuestionPath":null,"relatedArticles":[{"id":11024,"title":"Pituitary adenoma/PitNET","link":"/articles/pituitary-adenomapitnet?lang=us"},{"id":9801,"title":"Pituitary macroadenoma","link":"/articles/pituitary-macroadenoma-1?lang=us"}],"alsoUsedIn":[{"id":230,"kind":"Course","title":"X-ray Interpretation: Adult Chest - page 230","link":"https://radiopaedia.org/courses/x-ray-interpretation-adult-chest/pages/230"},{"id":230,"kind":"Course","title":"Pituitary Region Learning Pathway - page 230","link":"https://radiopaedia.org/courses/pituitary-learning-pathway/pages/230"}],"stem":"\u003cp\u003ePituitary macroadenomas are most likely to cause which of the following visual field defect?\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/475"}],"attemptsPercentages":[{"alternativeId":"2388","percentage":91},{"alternativeId":"2391","percentage":1},{"alternativeId":"2389","percentage":1},{"alternativeId":"2390","percentage":4},{"alternativeId":"2386","percentage":1},{"alternativeId":"2387","percentage":2}],"promptToLogin":false,"questionManager":false,"articleId":"optic-chiasm"}