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| Comparative study of ultrasound and radiology in the diagnosis of pediatric ureteral polyps |
| TANG Ying, HUA Li-chun, CHEN Jun, BIAN Chuan-zhen, ZHU Shan-liang, ZHOU Xin |
| Children’s Hospital of Nanjing Medical University, Nanjing 210008, China |
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Abstract Objective: To investigate the diagnostic value of ultrasound and radiology in pediatric ureteral polyps and compare the results. Methods: Thirty-nine cases of ureteral fibroepithelial polyps in children comfirmed by surgical pathology, were retrospectively analyzed and preoperative ultrasound results with radiological examination results were compared with the results of surgery. The reasons of missed diagnosis as well as misdiagnosis by ultrasound were summarized and the diagnostic value was evaluated. Results: Thirty-three cases were diagnosed correctly by ultrasound in which 31 cases were unilateral on left and 2 cases were bilaterally multiple(totally 35 polyps). Four cases were missed for only hydronephrosis. Two cases were misdiagnosed for inflammatory deposition and uretaral calculi respectively. The diagnostic accuracy rate of ultrasound was 84.6%. CT scan was performed in 25 children with different degrees of hydronephrosis and 19 cases were positively described as soft-tissue density lesions in the ureteral wall. The diagnostic accuracy of CT was 76.0%. IVP was performed in all cases. Eleven cases were positive on IVP which revealed filling defects. Nine children showed blunting UPJ which was suspicious for fibroepithelial polyp. The remaining 19 cases showed only UPJ obstruction on IVP without additional findings. The accuracy rate of IVP was 51.3%. Conclusions: Ultrasound, which can show the location, number and structural features of polyps, is an effective inspection method of pediatric ureteral fibroepithelial polyps and is superior to other methods owing to its features of simplicity, free radiation and high accuracy.
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Received: 26 March 2018
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