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Ultrasound image showing tubular ectasia of the rete testis as an incidental finding in an 81 year old male. Rete tubular ectasia, also known as cystic transformation of rete testis [1] is a benign condition, usually found in older men, involving numerous small, tubular cystic structures within the rete testis.
The rete testis (/ ˈ r iː t i ˈ t ɛ s t ɪ s / REE-tee TES-tis; pl.: retia testes) is an anastomosing network of delicate tubules located in the hilum of the testicle (mediastinum testis) that carries sperm from the seminiferous tubules to the efferent ducts. It is the homologue of the rete ovarii in females. [1]
The rete testis connects to the epididymal head via the efferent ductules. The epididymis is located posterolateral to the testis and measures 6–7 cm in length. At sonography, the epididymis is normally iso- or slightly hyperechoic to the normal testis and its echo texture may be coarser.
It is the homologue of the rete testis in males. [2] It is a narrow hilus , at which nerves and vessels enter the ovary . In the medulla of the mammalian ovary near the hilus are small masses of blind tubules or solid cords—the rete ovarii—which are homologous with the rete testis in the male.
The tubuli seminiferi recti (also known as the tubuli recti, tubulus rectus, or straight seminiferous tubules) are structures in the testicle connecting the convoluted region of the seminiferous tubules to the rete testis, although the tubuli recti have a different appearance distinguishing them from these two structures.
If located in the testes region, removal of the tumor must be handled with great care to prevent damage to testosterone production and keep the patient fertile. If removal of the tumor is necessary then an excision biopsy is usually done on the patient. Though this can be used as both a diagnostic and removal procedure, it has proven to be ...
In the central mass a series of cords appear, and the periphery of the mass is converted into the tunica albuginea, thus excluding the surface epithelium from any part in the formation of the tissue of the testis. The cords of the central mass run together toward the future hilum and form a network which ultimately becomes the rete testis.
Dilated rete testis containing spermatozoa within cyst lumen. H&E stain 20x. Spermatoceles can be discovered as incidental scrotal masses found on physical examination by a physician or by self-inspection of the scrotum and testicles. [7]