title: [Status of sonography versus roentgen and computed tomography in the diagnosis of nephrocalcinosis].
abstract: Sonography proves a highly sensitive instrument in recognition of nephrocalcinosis (nc). We demonstrate four cases of cortical and medullary nc of different etiology. While abdominal x-rays were unsuspective sonography demonstrated typical findings of nc. In the medullary type of nc the sonographic findings are typical. On the other hand cortical hyperechogenity does not prove nc but in extreme cases. Computerized tomography is able to measure Hounsfield Units and to demonstrate by this deposits of calcium without necessity of histology. We discuss the differential diagnosis of highly echogenic cortical and medullary renal tissue.
mesh_terms: D002648:Child; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D009397:Nephrocalcinosis / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014056:Tomography, X-Ray; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography
vernacular_title: Stellenwert der Sonographie gegenüber Röntgen und Computertomographie bei der Diagnose von Nephrokalzinosen.