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Related Concept Videos

Infertility in Males01:23

Infertility in Males

245
Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
245
Spermatogenesis01:41

Spermatogenesis

102.1K
Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male...
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Related Experiment Video

Updated: Jun 6, 2025

Vessel-Sparing Microsurgical Longitudinal Intussusception Vasoepididymostomy to Treat Epididymal Obstructive Azoospermia
06:28

Vessel-Sparing Microsurgical Longitudinal Intussusception Vasoepididymostomy to Treat Epididymal Obstructive Azoospermia

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Documented Paternity Despite Azoospermia Post-vasectomy.

Teresa Bernardes1, Ting Y Wu2, Christine C Greves2

  • 1Internal Medicine, Orlando Regional Medical Center, Orlando, USA.

Cureus
|November 29, 2024
PubMed
Summary
This summary is machine-generated.

A vasectomy failure occurred despite initial azoospermia confirmation. This highlights the importance of counseling patients on the risks of rare, unexpected pregnancies post-vasectomy, even with negative sperm counts.

Area of Science:

  • Urology
  • Reproductive Medicine
  • Genetics

Background:

  • Vasectomy is a common, safe, and permanent male contraceptive method.
Keywords:
paternitypaternity testingpolymerase chain reaction arrangementsemen analysisvasectomy

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  • Success is typically defined by azoospermia in semen analyses post-vasectomy.
  • Surgical factors like vas deferens length and postsurgical infection can impact success rates.