Multi-detector spiral CT features and relationship between renal and perirenal changes in acute unilateral upper urinary tract obstruction

doi:10.3877/cma.j.issn.1674-3253.2019.04.006

Abstract

Abstract:

Objective

To analyze the features of multi-detector spiral CT (MDCT) in renal and perirenal changes on the affected side in patients diagnosed with acute unilateral upper urinary tract obstruction, and explore the internal relationship between them.

Methods

Clinical data of 376 cases of acute unilateral upper urinary tract obstruction induced by calculi admitted to Nanhai Hospital from 2015 to 2017 were collected. All patients underwent MDCT scan. MDCT manifestations of the affected renal and perirenal changes were retrospectively analyzed. The correlation between the renal and perirenal changes was assessed by Spearman's rank correlation coefficient.

Results

The grade of perirenal changes was lowly associated with the degree of hydronephrosis (r_s=0.194, P<0.001), moderately correlated with decreased renal parenchymal density (r_s=0.387, P<0.001) and moderately associated with increased renal volume (r_s=0.545, P<0.001).

Conclusion

Analysis of MDCT features of renal and perirenal space during acute unilateral upper urinary tract obstruction can enable us to understand the internal relationship. The severity of perirenal changes is intimately correlated with the degree of hydronephrosis and renal swelling.

Key words: Upper urinary tract obstruction, Stone, Multi-detector spiral CT, Correlation coefficient

Fukang Zhang, Yihui Qiu, Kuaiqing Huang, Chaofan Cheng, Qingcong Kong. Multi-detector spiral CT features and relationship between renal and perirenal changes in acute unilateral upper urinary tract obstruction[J]. Chinese Journal of Endourology(Electronic Edition), 2019, 13(04): 238-241.

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组别	例数	肾积水[例（%）]			肾实质密度[（CT健-CT患），Hu]	肾体积[例（%）]
组别	例数	0度	轻度	中、重度	肾实质密度[（CT健-CT患），Hu]	无增大	有增大
0级	77	20（26.0）	55（71.4）	2（2.6）	0	64（83.1）	13（16.9）
Ⅰ级	103	10（9.7）	83（80.6）	10（9.7）	2	28（27.2）	75（72.8）
Ⅱ级	140	11（7.9）	118（84.3）	11（7.9）	2	23（16.4）	117（83.6）
Ⅲ级	56	3（5.4）	46（82.1）	7（12.5）	3	0（0）	56（100.0）
R_s值	?	0.194			0.387	0.545
P值	?	<0.001			<0.001	<0.001

组别	例数	肾积水[例（%）]			肾实质密度[（CT健-CT患），Hu]	肾体积[例（%）]
组别	例数	0度	轻度	中、重度	肾实质密度[（CT健-CT患），Hu]	无增大	有增大
0级	77	20（26.0）	55（71.4）	2（2.6）	0	64（83.1）	13（16.9）
Ⅰ级	103	10（9.7）	83（80.6）	10（9.7）	2	28（27.2）	75（72.8）
Ⅱ级	140	11（7.9）	118（84.3）	11（7.9）	2	23（16.4）	117（83.6）
Ⅲ级	56	3（5.4）	46（82.1）	7（12.5）	3	0（0）	56（100.0）
R_s值	?	0.194			0.387	0.545
P值	?	<0.001			<0.001	<0.001

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