Congenital Anomalies of the Male Reproductive System

Congenital anomalies of the male reproductive system cover a broad spectrum of developmental disorders arising during embryogenesis. Common conditions include cryptorchidism (undescended testis) and hypospadias (abnormal urethral opening), both of which may affect one in 100 male births and carry implications for fertility and psychosocial well-being. Less frequent but clinically significant anomalies involve mesonephric (Wolffian) duct malformations, exemplified by seminal vesicle cysts, ejaculatory duct obstruction and ipsilateral renal agenesis, collectively known as Zinner syndrome. Other presentations include congenital absence of the vas deferens, micropenis and disorders of sex development. Aetiologies range from genetic mutations and hormonal disruptions to environmental exposures, with phenotypic severity influenced by timing of insult during gestation. Diagnostic pathways integrate ultrasonography, magnetic resonance imaging and hormonal assays, guiding management strategies that span conservative observation, minimally invasive intervention and open reconstructive surgery. Globally, early recognition of these anomalies is pivotal to preserving fertility, preventing urinary tract complications and addressing psychosocial concerns.

Research from Nature Portfolio

No recent Nature Portfolio content available.

Congenital Anomalies of the Male Reproductive System publication trend

The graph below shows the total number of articles in congenital anomalies of the male reproductive system across all publications each year (not limited to Nature Index journals).

Technical terms

Wolffian duct: Embryonic structure that develops into male internal genital ducts, including the epididymis, vas deferens and seminal vesicles.

Renal agenesis: Developmental absence of one (unilateral) or both (bilateral) kidneys owing to failure of the ureteric bud to form.

Seminal vesicle cyst: Fluid-filled dilation of a seminal vesicle, often resulting from congenital ductal obstruction.

Ejaculatory duct obstruction: Blockage of the ducts conveying semen from the seminal vesicles and vas deferens to the urethra, leading to infertility and pain.

Cryptorchidism: Failure of one or both testes to descend into the scrotum, associated with increased risk of malignancy and subfertility.

References

1. Zinner syndrome and infertility─a literature review based on a clinical case. International Journal of Impotence Research (2020).
2. Zinner Syndrome Unmasked by Workup for Renal Colic and Uncontrolled Hypertension. Cureus (2020).
3. Laparoscopic treatment of a giant seminal vesicle cyst with hemorrhage. Medicine (2021).