Obstruction of the seminal ducts is the cause of infertility in about 5% of patients. It can be congenital or arise as the result of secondary changes. The reconstruction of the duct undertaken depends on the site of the obstruction. The introduction of microsurgical techniques has revolutionized the treatment of male infertility.A tubulovasostomy is carried out if the obstruction lies in the region of the epididymis. Such an anastomosis requires, owing to the minute anatomical relationships involved, a microsurgical procedure. For an obstruction of the vas deferens a vasovasostomy is required. Many investigations have shown that microsurgical techniques are also necessary for this procedure if a satisfactory success rate is to be achieved. The double-layer technique is the standard method for vasovasostomy. Transurethral resection of the ejaculatory ducts (TURED) is required for the very rare obstruction in this region, and men with an obstruction here cannot be regarded as forming a homogeneous group.Before advising an infertile couple it is necessary to investigate the individual conditions and possibilities. Because of the high success rate obtainable today by surgical reconstruction of the seminal ducts, this must constitute the first type of treatment to be considered, before any of the procedures of reproductive medicine are undertaken.
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http://dx.doi.org/10.1007/s00120-008-1803-5 | DOI Listing |
Dev Biol
March 2025
Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI, 48109, USA. Electronic address:
The Drosophila Ejaculatory duct (ED) is a secretory tissue of the somatic male reproductive system. The ED is involved in the secretion of seminal fluid components and ED-specific antimicrobial peptides that aid in fertility and the female post-mating response. The ED is composed of secretory epithelial cells surrounded by a layer of innervated contractile muscle.
View Article and Find Full Text PDFThe paper details new geographic records of two species of the genus Polycelis Ehrenberg,1831 (Platyhelminthes, Tricladida, Planariidae) for the Qinling Mountains and the Loess Plateau in China and provides redescriptions of these species based on an integrative taxonomic study involving morphology, karyology, and histology. This new information considerably expands our knowledge on these species, for which until now only limited data was available. The species Polycelis asiatica Selinova, 1985 is characterized by the following features: 63-80 eyes; sperm ducts that exhibit an intrabulbar knee-shaped bend towards the ventral surface before opening separately and symmetrically into the antero-dorsal portion of a large seminal vesicle; the latter is ventrally displaced, thus creating a narrow ventral lip on the penis papilla; dorsal wall of the seminal vesicle is provided with several well-developed folds; more or less bulbous penis papilla protrudes from the dorsal wall of the male atrium and is provided with a slender and flexible tip; chromosome complement diploid with 30 metacentric chromosomes, 8 submetacentric chromosomes, and 2 subtelocentric chromosomes.
View Article and Find Full Text PDFBMC Urol
December 2024
Department of Urology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.
Background: Zinner syndrome (ZS) is a congenital malformation characterized by a triad of mesonephric (Wolffian) duct dysplasia, first identified by Zinner in 1914. The classical presentation of ZS includes unilateral renal hypoplasia or dysplasia, ipsilateral seminal vesicle cysts, and obstruction of the ejaculatory duct. This case presents a rare variant of the syndrome, where an ejaculatory duct cyst is observed instead of the typical ipsilateral seminal vesicle cyst.
View Article and Find Full Text PDFJ Med Case Rep
November 2024
Department of Urology, La Rabta Hospital, University of Tunis El Manar, Tunis, Tunisia.
Background: Synchronous abscesses of the prostate and seminal vesicles represent a rare but clinically significant form of purulent retention. They pose diagnostic and therapeutic challenges and are associated with considerable morbidity and a high risk of sepsis.
Case Presentation: We present the case of a 60-year-old Caucasian man with a history of insulin-dependent diabetes mellitus, who had a voluminous prostatic abscess associated with a right seminal vesicle abscess due to compression of the right ejaculatory duct, and who presented to our department with sepsis.
Am J Mens Health
October 2024
Department of Andrology and Sexual Medicine, The Second Hospital of Dalian Medical University, Dalian, China.
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