Question 2094
{"accessible":false,"alternatives":[{"id":10395,"text":"acute pyelonephritis "},{"id":10396,"text":"acute tubular necrosis"},{"id":10398,"text":"acute renal vein thrombosis"},{"id":10397,"text":"acute ureteric obstruction"},{"id":10399,"text":" renal cortical necrosis"}],"archived":false,"correctAlternativeId":10399,"explanation":"\u003cp\u003eIn \u003ca href=\"/articles/renal-cortical-necrosis\"\u003erenal cortical necrosis\u003c/a\u003e, the\u0026nbsp;contrast-enhanced CT demonstrates a non-enhancing renal cortex and a normal enhancing renal medulla which is called \"\u003ca href=\"https://radiopaedia.org/articles/reverse-rim-sign-kidney?lang=gb\"\u003ereverse rim sign\u003c/a\u003e\".\u0026nbsp;A very thin rim of contrast enhancement \"\u003ca href=\"https://radiopaedia.org/articles/cortical-rim-sign-kidneys-1?lang=gb\"\u003ecortical rim sign\u003c/a\u003e\" may persist and should not be mistaken for adequate perfusion.\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003ca href=\"/articles/striated-nephrogram\"\u003eStriated nephrogram\u003c/a\u003e\u0026nbsp;is defined as alternating linear bands of high and low attenuation in a radial pattern extending through the corticomedullary layers of the\u0026nbsp;kidney\u0026nbsp;on iodine-based intravenous contrast-enhanced imaging. The striations result from stasis and concentration of contrast material in edematous or necrosed tubules.\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u0026nbsp;\u003c/p\u003e","id":2094,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2094","nextQuestionPath":null,"relatedArticles":[{"id":36524,"title":"Ureteric calculi","link":"/articles/ureteric-calculi?lang=us"},{"id":12714,"title":"Renal cortical necrosis","link":"/articles/renal-cortical-necrosis?lang=us"},{"id":9957,"title":"Striated nephrogram","link":"/articles/striated-nephrogram?lang=us"},{"id":67398,"title":"Acute tubular necrosis","link":"/articles/acute-tubular-necrosis?lang=us"},{"id":9953,"title":"Acute pyelonephritis","link":"/articles/acute-pyelonephritis-1?lang=us"}],"alsoUsedIn":[],"stem":"\u003cp\u003eAll the following points may be the etiologies of a striated nephrogram on CTU\u0026nbsp;\u003cstrong\u003eEXCEPT...\u003c/strong\u003e\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/2094"}],"attemptsPercentages":[{"alternativeId":"10398","percentage":6},{"alternativeId":"10399","percentage":68},{"alternativeId":"10395","percentage":3},{"alternativeId":"10397","percentage":15},{"alternativeId":"10396","percentage":8}],"promptToLogin":false,"questionManager":false,"articleId":"renal-vein-thrombosis"}