Question 2898
{"accessible":false,"alternatives":[{"id":14128,"text":"Bosniak class I"},{"id":14129,"text":"Bosniak class II"},{"id":14130,"text":"Bosniak class IIF"},{"id":14131,"text":"Bosniak class III"},{"id":14132,"text":"Bosniak class IV"}],"archived":false,"correctAlternativeId":14132,"explanation":"\u003cp\u003eAccording to Bosniak classification version 2019, an enhancing nodule with obtuse angles to the wall or septum and a size of 4 mm or more, suggests a Bosniak class IV lesion with an estimated risk of malignancy up to 90%.\u003c/p\u003e","id":2898,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2898","nextQuestionPath":"/articles/renal-cyst-1/questions/2897","relatedArticles":[{"id":86757,"title":"Bosniak classification of cystic renal masses (version 2019)","link":"/articles/bosniak-classification-of-cystic-renal-masses-version-2019?lang=us"}],"alsoUsedIn":[],"stem":"\u003cp\u003eOn abdominal CT images of a 55-year-old man, there is a 40 mm partially exophytic cystic mass in the upper pole of the left kidney that contains a 4 mm enhancing nodule with obtuse angles to the wall. What is the Bosniak class according to the Bosniak classification version 2019?\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/2898"}],"attemptsPercentages":[{"alternativeId":"14131","percentage":23},{"alternativeId":"14132","percentage":77},{"alternativeId":"14128","percentage":0},{"alternativeId":"14129","percentage":0},{"alternativeId":"14130","percentage":0}],"promptToLogin":false,"questionManager":false,"articleId":"renal-cyst"}