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Heather Borders, MD
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Bilateral Antenatal Testicular Torsion

Case Detail

Anatomy: Genitourinary
Joseph Junewick, MD FACR
Diagnostic Category: Vascular
Created: over 10 years ago
Updated: over 10 years ago
Tags: PEDS
Modality/Study Types: US
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5 day old with firm bilateral scrotal masses.

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Bilateral Antenatal Testicular Torsion


US – 1) Enlarged and markedly heterogeneous left testicle with dystrophic calcifications and some subtunica fluid, 2) Mildly heterogeneous right testicle with enlarged and cystic epididymis, 3) Absent testicular flow on color Doppler.


Neonatal testicular torsion is a unique clinical entity. Most patients present with scrotal swelling and discoloration. Torsion involves all contents of the hemiscrotum and is referred to a extravaginal since the tunica albuginea is only loosely adhered to the scrotal wall (in adolescents and adults, torsion is intravaginal).

Traubici et al. describe 3 US appearances of neonatal torsion which likely reflect the natural evolution: Type I – The testicle is markedly enlarged and demonstrates heterogeneous echotexture; occasionally subtunica fluid, hydrocele, and mediastinal striations are seen. Type II – Testicular size is normal but echotexture is heterogeneous. Type III – The testicle is markedly small with disordered echogenecity. Testicular Doppler flow is absent in all types. Neonatal torsion is rare with only a few cases of bilateral torsion reported.

Differential diagnosis is limited. Hernia is common in this age group but easily differentiated from the testicle. Trauma, infection and germ cell tumors are exceedingly rare at this age.


Traubici J, Daneman A, Navarro O, Garcia C. Testicular torsion in neonates and infants: Sonographic features in 30 patients. AJR (2003); 180:1143-1145.


Corie Horness, RDMS

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