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The Leydig cells secrete testosterone to aid the male differentiation process by inducing structures such as the epididymis, vas deferens and seminal vesicles. However, with PMDS individuals, the Müllerian duct persists instead of regressing, either due to AMH secretion (PMDS Type I) or AMH receptors (PMDS Type II). [ 14 ]
In vasectomies, the vas deferens are cut and the two ends are tied to prevent sperm from passing. Sperm granuloma may then form at the point where the vas deferens were cut, due to the possibility of sperm leaking out at this site. History of trauma or inflammation of the epididymis can also lead to a sperm granuloma. [2]
The vas deferens (pl.: vasa deferentia), ductus deferens (pl.: ductūs deferentes), or sperm duct is part of the male reproductive system of many vertebrates. In mammals, spermatozoa are produced in the seminiferous tubules and flow into the epididymal duct. The end of the epididymis is connected to the vas deferens.
The ejaculatory ducts (ductus ejaculatorii) are paired structures in the male reproductive system. [1] Each ejaculatory duct is formed by the union of the vas deferens with the duct of the seminal vesicle. [2] They pass through the prostate, and open into the urethra above the seminal colliculus.
The exact cause of an epididymal cyst is unknown, but it is most likely a congenital anomaly associated with hormonal imbalances during embryonic life. [3] Previous research has shown a correlation between the development of epididymal cysts and maternal exposure to endocrine disrupting substances like diethylstilbestrol during male fetal development.
However, transrectal ultrasound has a relatively low sensitivity of approx. 50% and thus is only a tool to rule-out cysts in the region of the orifices but is not sufficient to rule out an obstruction of the ejaculatory ducts due to other causes. In approx. 50% of cases of unexplained low-volume azoospermia MRI and TRUS do not reveal any ...
Vasography with a prostatic cyst and seminal vesicles filled with iodinated contrast. Vasography is an X-ray study of the vas deferens to see if there is blockage, oftentimes in the context of male infertility. [1] An incision is made in the scrotum, contrast is injected in the vas deferens, and X-rays are taken from different angles. [1]
The kidney is the most frequently affected urogenital organ, followed in men by the epididymis. Testicular sarcoidosis can present as a diffuse painless scrotal mass or can mimic acute epididymo-orchitis. Usually, it appears with systemic manifestations of the disease. [3]