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Significant Predictors for Determination of Testicular Rupture on Sonography

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Issue Date
2007-11-22
Publisher
American Institute of Ultrasound in Medicine
Citation
J Ultrasound Med 2007; 26:1649–1655
Abstract
OBJECTIVE: The purpose of this study was to evaluate prospectively useful sonographic diagnostic criteria for testicular rupture in patients with blunt scrotal trauma and to determine significant predictors among the criteria. METHODS: From July 2004 to February 2007, 29 consecutive patients (mean age, 22.8 years; range, 20-43 years) with blunt scrotal trauma who underwent scrotal sonography were enrolled. Ten ruptured testes and 6 intact testes were confirmed by surgery, and an additional 13 intact testes were confirmed by a physical examination. The sonographic findings were recorded with respect to contour irregularity, the presence of intratesticular and extratesticular heterogeneous echoes, loss of blood flow on color Doppler sonography, and engorgement of the pampiniform plexus by consensus between 2 radiologists. The sonographic findings used to diagnose testicular rupture were analyzed by the Fisher exact test, and significant predictors were determined by multiple regression analysis. RESULTS: The ruptured testes showed contour irregularity (P=.0002), a heterogeneous intratesticular echo pattern (P=.0077), and loss of blood flow on color Doppler sonography (P=.0093). Engorgement of the pampiniform plexus was seen in most nonruptured testes (P=.0178). Contour irregularity was the only significant predictor for the diagnosis of testicular rupture (P=.0002). On the basis of this single predictor, diagnostic predictive values for sonography were calculated; the accuracy, sensitivity, and specificity were all 90%. The positive predictive value and negative predictive value were 82% and 94%, respectively. CONCLUSIONS: Among the useful sonographic criteria, contour irregularity is the only significant predictor for the diagnosis of testicular rupture in patients with blunt scrotal trauma.
ISSN
0278-4297 (Print)
1550-9613 (Electronic)
Language
English
URI
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=18029916

https://hdl.handle.net/10371/16159
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College of Medicine/School of Medicine (의과대학/대학원)Radiology (영상의학전공)Journal Papers (저널논문_영상의학전공)
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