Urology Book


Prehn's Sign

Aka: Prehn's Sign, Prehns Sign, Prehn Sign
  1. Indications
    1. Scrotal Pain
  2. Technique
    1. Examiner elevates Scrotum with hand, supporting Testicle
  3. Interpretation: Positive
    1. Elevation of Scrotum relieves pain in Epididymitis
    2. Does not offer relief in Testicular Torsion (elevation may worsen pain)
  4. Efficacy
    1. Test Sensitivity: 91.3%
      1. Does not exclude Testicular Torsion
    2. Test Specificity: 78.3%
      1. Present in more than 20% of Epididymitis cases
  5. References
    1. Asgari (2006) Urol J 3(2): 104-8 [PubMed]

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