Tubular ectasia of rete testis
Tubular ectasia of rete testis represents dilated testicular mediastinal tubules.
This condition is more common in men over the age of 55.
This is a benign condition thought to result from the partial or complete obliteration of the efferent ducts. It is often bilateral, is frequently associated with spermatoceles and may occur as result of a vasectomy 2.
At sonography, it appears as multiple small cystic or tubular anechoic structures that replace and enlarge the testicular mediastinum. The geographic shape, lack of mass effect, and lack of internal flow are helpful to distinguish this benign condition from a partially cystic tumour.
On MR imaging, the cystic dilatation or ectasia of multiple small tubules of the rete testis appears hyperintense on T2-weighted images. After administration of gadolinium contrast material, no internal enhancement is seen.
- 1. Kim W, Rosen MA, Langer JE et-al. US MR imaging correlation in pathologic conditions of the scrotum. Radiographics. 27 (5): 1239-53. doi:10.1148/rg.275065172 - Pubmed citation
- 2. Ishigami K, Abu-Yousef MM, El-Zein Y. Tubular ectasia of the epididymis: a sign of postvasectomy status. J Clin Ultrasound. 2005;33 (9): 447-51. doi:10.1002/jcu.20162 - Pubmed citation
Ultrasound - testicular and scrotal
- ultrasound (introduction)
testicular and scrotal ultrasound
unilateral testicular lesion
- testicular torsion
- testicular rupture
- germ cell tumours of the testis
- sex cord / stromal tumours of the testis
- bilateral testicular lesion
- paratesticular lesions
- tubular ectasia of the rete testis
- cystadenoma of the rete testis
- testicular sarcoidosis
- testicular tuberculosis
- spermatic cord
- fibrous pseudotumour of the scrotum
- scrotal leiomyosarcoma
- testicular adrenal rest tumours (TARTs)
- tunica vaginalis testis mesothelioma
- splenogonadal fusion
- unilateral testicular lesion