Torsion of the testicular appendix

Case contributed by Mohammad A. ElBeialy
Diagnosis certain


Acute right scrotal pain.

Patient Data

Age: 11 years
Gender: Male

Immediately adjacent to the right epididymis is a fairly well defined 8 x 7 x 6 mm heterogeneously hypoechoic lesion with no detected vascularity. Both testes are of normal size and symmetrical with homogenous texture to their parenchyma. No focal lesions and intact regular capsules. No peri-testicular masses or fluid collections. Normal size and echogenicity of the left epididymis. Color flow mapping of the scrotal veins shows no visible dilated veins of the pampiniform plexuses, the spermatic cord or peri-testicular region.

Case Discussion

Torsion of the appendix testis was confirmed intra-operatively. 

A small hypoechoic avascular lesion adjacent to an apparently enlarged epididymis is highly suggestive of torsion of appendix testis in a child with sudden onset of acute painful hemiscrotum.

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