Whirlpool sign (testicular torsion)

Last revised by Maulik S Patel on 13 Nov 2020

The whirlpool sign of the spermatic cord is a direct sign of testicular torsion, both complete and incomplete (i.e. <360°). It is considered to be the most specific and sensitive sign for testicular torsion.

Terminology

The term whirlpool sign is used in other contexts: see whirlpool sign (disambiguation).

Radiographic features

A spiral twist demonstrated in the course of the spermatic cord on greyscale ultrasound, either in the external inguinal ring or in the scrotal sac.

See references 1 and 5 for demonstrative videos.

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Cases and figures

  • Case 1
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  • Case 2
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  • Case 3
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  • Case 4
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  • Case 5
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  • Case 6: video
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