Ultrasonography of the Undescended Testis

Hederström, E.; Forsberg, L.; Kullendorff, Carl‐Magnus

doi:10.1177/028418518502600415

Cited by 17 publications

(6 citation statements)

References 10 publications

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“…The advantages of ultrasonography include its convenience, non‐invasiveness and painlessness, that it poses no significant biological risk, that it involves no radiation exposure, and that it is a readily available screening method. Hederstrom et al 8 . showed a correspondence between localization by US and surgical confirmation in 53 (88%) of 60 cases, with most of the gonads being in a low inguinal position.…”

Section: Discussionmentioning

confidence: 94%

Accuracy of ultrasonography and magnetic resonance imaging in the diagnosis of non‐palpable testis

et al. 2005

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Background : Studies were needed to evaluate the accuracy of ultrasonography (US) and magnetic resonance imaging (MRI) for diagnosing non-palpable testis, and to study the clinical usefulness of US and MRI before surgical exploration. Methods : Fifty-six patients with non-palpable testis aged 1-12 years were examined between 1993 and 2002. Forty-six patients (55 non-palpable testes) underwent US. Forty patients (47 non-palpable testes) were examined using MRI. Both US and MRI were used in 29 patients (34 non-palpable testes). We used Fisher's exact probability test to compare the results of these graphic examinations with the surgical or laparoscopic findings for the non-palpable testis.Results : Ultrasonography had a sensitivity of 76%, a specificity of 100%, and an accuracy of 84% in the diagnosis of non-palpable testis, whereas MRI had a sensitivity of 86%, a specificity of 79%, and an accuracy of 85%.Conclusions : There were no statistically significant differences in the accuracy rates of US and MRI for diagnosing non-palpable testis. Laparoscopy or inguinal exploration should be performed even if these graphic examinations demonstrate the absence of a testis, because some patients with a nonpalpable testis were found to be false negatives. We recommend US as the first step after clinical examination, and MRI could be performed when the US findings are negative preoperatively for a non-palpable testis.

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Section: Discussionmentioning

confidence: 94%

Accuracy of ultrasonography and magnetic resonance imaging in the diagnosis of non‐palpable testis

et al. 2005

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“…1) [21]. Because of good spatial resolution and freely selectable scanning planes (parallel to the course of the inguinal canal), high-resolution real-time US can reliably detect a testis located in the inguinal canal or between the external inguinal ring and the scrotal neck [22]. Even very small (10 mm in diameter; Fig.…”

Section: Ultrasound In the Evaluation Of Cryptorchid Testismentioning

confidence: 99%

Cryptorchidism: strategies in detection

1999

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Imaging evaluation of the patient with a non-palpable testis has evolved over recent decades. The rational explanation of imaging in these patients requires a clear understanding of the various causes of a non-palpable testis, and an appreciation of the utility and limitations of the available imaging modalities. This review describes the classification of non-palpable testis and discusses the role of modern imaging in evaluation. In particular, the relative accuracies of ultrasound, CT and MRI is reviewed.

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“…Other known indications for SUS include cryptorchidism 17 and infertility to assess for testicular size and presence of subclinical varicocele. 18 SUS exhibited an overall accuracy of 96% in the three groups studied and was 86% accurate in the operative group.…”

Section: Discussionmentioning

confidence: 99%