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| CT and ultrasonic features of kidney in hemorrhagic fever with renal syndrome |
| ZHANG Bao-lin, YANG Jun-yan |
| CT Room, Contagion Hospital of Shenyang, Shenyang 110006, China |
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Abstract Objective: In order to promote the diagnostic accuracy, CT and ultrasonic(US) features of renal damage in hemorrhagic fever with renal syndrome(HFRS) were analyzed. Materials and Methods: CT and US observation of kidney were performed in 63 hospitalized patients. The CT and US features of renal damage were analyzed according to different ages. Five imaging characteristic features of renal damage were found. Results: The characteristic features of renal damage were: ①Kidneys were symmetrically enlarged on both sides. ②Aggregation of minor calyces and shrinking of renal pelvis. ③Inhomogeneous of renal density, hypointense of renal cortex, and slightly hyperintense of renal medulla. ④Renal rupture and hemorrhage showed hematoma in perirenal and subcapsular space. In the early phase hematoma appeared inhomogeneous hyperintense and became hypointense gradually. It appeared mixed density on ultrasonography. ⑤On enhanced CT scanning the density of renal medulla increased, the margin of renal calyces became indistinct. In this study, the imaging features of kidney were analyzed according to the stages of the disease, that is the pyretogenetic stage, shock stage, oliguria stage, and diuretic stage. Conclusion: There are three principal signs such as acute onset, hemorrhage and renal damage of HFRS. CT scanning has specific value in diagnosing the disease especially when rupture of kidney and hemorrhage is suspected.
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Received: 02 August 2005
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2006, Vol. 17 
