Çocuk Sağlığı ve Hastalıkları Dergisi 2006 , Vol 49 , Num 4
Transient renal medullary hyperechogenicity in newborns with acute renal failure and dehydration: ultrasonography follow-up
Tayfun Çelik1, Ahmet Kemal Fırat2, Ayşegül Sağır Kahraman1, Gülnur Erdem2 Hakkı Muammer Karakaş3, Cengiz Yakıncı4
1İnönü Üniversitesi Turgut Özal Tıp Fakültesi Radyoloji Araştırma Görevlisi
2İnönü Üniversitesi Turgut Özal Tıp Fakültesi Radyoloji Yardımcı Doçenti
3İnönü Üniversitesi Turgut Özal Tıp Fakültesi, Radyoloji Doçenti
4İnönü Üniversitesi Turgut Özal Tıp Fakültesi Pediatri Profesörü
Çelik T, Fırat AK, Kahraman AS, Erdem G, Karkaş HM, Yakıcı C. (Departments of Radiology and Pediatrics, İnönü University Faculty of Medicine, Malatya, Turkey). Transient renal medullary hyperechogenicity in newborns with acute renal failure and dehydration: ultrasonography follow-up. Çocuk Sağlığı ve Hastalıkları Dergisi 2006; 49: 291-295.

Our purpose was to assess the time interval between the visualization of renal medullary hyperechogenicity and its resolution in neonates with acute renal failure. Seven newborns with renal medullary hyperechogenicity and acute renal insufficiency noted on ultrasonography (US) were included in the study group. Their ages were ranged between three and six days. All of the patients underwent US at the first presentation and in the follow-up. In all of the patients diffuse medullary hyperechogenicity was noted in the bilateral kidney. Biochemistry examinations revealed abnormal BUN and creatine level in all neonates and additional hypernatremia in four of them. The medullary hyperechogenicity totally disappeared between the 10th and 30th days of the neonatal period. Renal functions had normalized before the resolution of medullary hyperechogenicity between the 7th and 10th days. Transient medullary hyperechogenicity may be delayed due to presence of abnormal renal functions. For this reason, while deciding to examine these patients for metabolic disease. persistent renal medullary hyperechogenicity after 10 days in the neonatal period should be evaluated in accordance with biochemistry findings. Anahtar Kelimeler : renal medüller hiperekojenite. hipernatremi. Ultrasonografi, transient medullary hyperechogenicity. hypernatremia. Ultrasonography

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