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Journal of Medical Ultrasonics

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1991 - Vol.18

Vol.18 No.01

Original Article(原著)

(0077 - 0081)


Ultrasonographic Evaluation of Renal Impairments after Extracorporeal Shock Wave Lithotripsy

内藤 久美子1, 速水 恭子1, 伊藤 祥子2, 内藤 晃1, 仙波 真弓1, 林 睦雄3, 伊藤 勝陽1

Kumiko NAITO1, Kyoko HAYAMIZU1, Shoko ITO2, Akira NAITO1, Mayumi SENBA1, Mutsuo HAYASHI3, Katsuhide ITO1

1広島大学医学部放射線医学教室, 2吉島病院放射線科, 3たかの橋中央病院泌尿器科

1Department of Radiology, Hiroshima University School of Medicine, 2Department of Radiologiy, Yoshijima Hospital, 3Department of Urology, Takanobashi Chuo Hospital

キーワード : Extracorporeal shock wave lithotripsy, Renal impairment, Ultrasonography

Renal impairments after extracorporeal shock wave lithotripsy (ESWL) were evaluated ultrasonographically. Twenty-three patients with renal stones were examined by ultrasonography within thirty minutes both before and after ESWL.
In seven cases, perirenal or subcapsular fluid collections were identified. The differences in the transverse diameter and the parenchymal thickness of the treated kidney before and after ESWL were significant, so enlargement of the treated kidney was suspected. In six cases, enlarged and conspicuous renal pyramids were identified, similar to renal allograft rejection or acute tubular necrosis. Histograms of twenty cases indicated increased contrast between renal pyramids and cortexes.
We deduced that these changes reflected damage to renal vesseles and urinary tubules, which took place during ESWL.
In conclusion, ultrasonography is helpful when evaluating renal impairment after ESWL.