Obstruction of the ejaculatory duct is usually detected by a TRUS and is usually accompanied by dilation of the seminal vesicles (typically >1.
Vasography is not required and should be discouraged for men with an ejaculatory duct obstruction (Level of Evidence 3, Grade C Recommendation).
The vas deferens, ejaculatory duct and lower two-thirds of the epididymis also arise from mesonephric duct system.
3), (4) Symptomatic SVCs usually occur in the second to fourth decades of life, as the result of accumulated seminal fluid in the seminal vesicle caused by a blocked ejaculatory duct.
Low volume is associated with ejaculatory duct obstruction, congenital bilateral absence of the vas deferens (CBAVD), retrograde ejaculation or androgen deficiency.
3) Both may be secondary to testicular failure or obstruction inside the testis, epididymis, vas deferens or ejaculatory duct.
7) The seminal vesicle and ejaculatory duct
have also been identified as potential mimickers of carcinoma when the foci of interest are small, such as on a core needle biopsy.
Furthermore, differential firing of left and right ejaculatory ducts
may contribute to how males strategically change the number of sperm in their ejaculates, a phenomenon that is widespread, but for which the mechanism remains unknown," they say.
The anatomical relationship of the prostatic utricle with adjacent structures, including bladder, rectal, ejaculatory duct
and neurovascular structures, is relatively complicated, which may lead to a difficult treatment.
Transrectal ultrasonography in disorders of the seminal vesicles and ejaculatory ducts
There was not a site-specific preponderance for the urethra, ejaculatory ducts
, prostatic ducts, or utricle.
The ejaculatory ducts
were easily visualized on gross examination as a yellow-brown line through the long axis of the prostate.
The involvement of testis frequently occurs as a result of direct spread through ejaculatory ducts
involving the prostate.
Sharp dissection of the bladder from seminal vesicles, ejaculatory ducts
and deferential ampullae is performed.
The vas and ducts from the seminal vesicles coalesce to form the paired ejaculatory ducts
, which enter the prostatic urethra lateral to the verumontanum.