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Related Concept Videos

Accessory Ducts of the Male Reproductive System01:25

Accessory Ducts of the Male Reproductive System

The male reproductive system is a complex network of organs and tissues that work together to produce and transport sperm. The epididymis, vasa deferens, ejaculatory ducts, and urethra are the accessory ducts involved in sperm maturation and transportation. These ducts play a critical role in the production and transportation of sperm from the testes to the urethra, where it is then released during ejaculation.
The epididymis is a small, comma-shaped organ located at the back of each testicle.
Accessory Glands of the Male Reproductive System01:16

Accessory Glands of the Male Reproductive System

The accessory ducts involved in sperm maturation and transportation include the epididymides, vasa deferentia, ejaculatory ducts, and urethra. These ducts play a critical role in the maturation, storage, and transportation of sperm from the testes to the urethra, where it is then released during ejaculation.
The epididymis is a small, comma-shaped organ located at the back of each testicle. The epididymis can be divided into three main parts: the head, body, and tail. The head of the epididymis...
Urologic Endoscopic Procedure: Cystoscopic Examination01:28

Urologic Endoscopic Procedure: Cystoscopic Examination

Meaning of Cystoscopic Examination:Cystoscopy is an essential diagnostic tool in urology that is used to assess the structure and function of the genitourinary system. It provides a direct view of the urethra, bladder, and, in some cases, the ureteral openings. This procedure helps detect structural abnormalities, infections, cancers, and blockages in the urinary tract. There are two types of cystoscopy:Flexible cystoscopy is commonly performed in outpatient settings due to its less invasive...
Intestinal Obstruction I: Introduction01:29

Intestinal Obstruction I: Introduction

Intestinal obstruction is a partial or complete blockage of the small or large intestine that disrupts the normal flow of intestinal contents through the lumen. This interruption impairs digestion, absorption, and fluid balance, and may lead to serious complications if not treated promptly.Mechanical ObstructionMechanical obstruction occurs when a physical blockage prevents intestinal contents from passing, arising from within the lumen or the bowel wall, or from external compression.Adhesions,...
Ureters01:22

Ureters

The ureters are retroperitoneal tubes located on either side of the vertebral column. They are responsible for transporting urine from each kidney to the urinary bladder. These tubes have thick walls and are approximately 25-30 cm long. Their diameter is around 10 mm at the renal pelvis, gradually narrowing to 1 mm as the ureter obliquely enters the posterior bladder wall through the ureteric orifices. The shape of these orifices is slit-like, which helps to prevent urine backflow toward the...
Urinary Tract Calculi VI: Surgical Management01:25

Urinary Tract Calculi VI: Surgical Management

Procedures for Kidney StonesMedical intervention is necessary when kidney stones or renal calculi are too large to pass spontaneously (typically greater than 5 millimeters) when stones are accompanied by symptomatic infection (such as fever or pyelonephritis), when they impair kidney function, or when they cause persistent symptoms like severe pain, nausea, or urinary retention. Additionally, patients with only one kidney or those who cannot be treated with medical management also require...

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Related Experiment Video

Updated: Jul 5, 2026

Treatment of Ejaculatory Duct Obstruction by Seminal Vesiculoscopy Assisted Flow Modification
03:51

Treatment of Ejaculatory Duct Obstruction by Seminal Vesiculoscopy Assisted Flow Modification

Published on: December 8, 2023

Ejaculatory duct obstruction.

James F Smith1, Thomas J Walsh, Paul J Turek

  • 1Department of Urology, University of California, San Francisco, 1600 Divisadero Street, San Francisco, CA 94143, USA.

The Urologic Clinics of North America
|April 22, 2008
PubMed
Summary
This summary is machine-generated.

Diagnosing ejaculatory duct obstruction, a cause of male infertility, can be challenging. This review outlines evidence-based diagnostic and treatment strategies for ejaculatory duct obstruction.

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Treatment of Ejaculatory Duct Obstruction by Seminal Vesiculoscopy Assisted Flow Modification
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Vessel-Sparing Microsurgical Longitudinal Intussusception Vasoepididymostomy to Treat Epididymal Obstructive Azoospermia
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Vessel-Sparing Microsurgical Longitudinal Intussusception Vasoepididymostomy to Treat Epididymal Obstructive Azoospermia

Published on: May 27, 2022

Area of Science:

  • Urology
  • Reproductive Medicine
  • Male Infertility

Background:

  • Ejaculatory duct obstruction (EDO) causes infertility, pain, and hematospermia.
  • Functional or partial EDO poses diagnostic challenges.
  • Transrectal ultrasound is a primary diagnostic tool but lacks specificity.

Purpose of the Study:

  • To review the diagnostic and treatment approaches for ejaculatory duct obstruction.
  • To provide an evidence-based framework for managing EDO.

Main Methods:

  • Review of current literature on ejaculatory duct obstruction diagnosis and treatment.
  • Discussion of diagnostic modalities including transrectal ultrasound, seminal vesicle aspiration, seminal vesiculography, and chromotubation.

Main Results:

  • Transrectal ultrasound is the initial diagnostic step for EDO.
  • Adjunctive procedures are necessary for definitive diagnosis of partial or functional EDO.
  • An evidence-based approach guides optimal management strategies.

Conclusions:

  • Accurate diagnosis of ejaculatory duct obstruction requires a combination of imaging and functional tests.
  • Timely and appropriate treatment can improve outcomes for men with EDO.
  • Further research may refine diagnostic criteria and therapeutic options.