seminal vesicle agenesis

Seminal vesicle agenesis is a condition that refers to the congenital absence of one or both seminal vesicles.

Epidemiology

Seminal vesicle agenesis is a rare finding with a reported incidence of 0.08 % .

Associations

Developmental anomalies of the ipsilateral urogenital tract may be observed :

• ipsilateral renal agenesis
• ejaculatory duct obstruction
• ectopic ureter opening
• ductus deferens agenesis

Clinical presentation

This anomaly is usually asymptomatic, but may present with infertility, low‐volume ejaculate, hematuria and perineal pain .

Pathology

Unilateral vesicle seminal agenesis is observed when complete failure of the mesonephric duct occurs before the seventh week of gestation .

Bilateral vesicle seminal agenesis is usually only seen in cystic fibrosis .

Radiographic features

Unilateral or bilateral absence of seminal vesicles, posterior to the prostate.

Differential diagnosis

• seminal vesicle hypoplasia

Siehe auch:

• Agenesie von Niere und Samenblase auf der gleichen Seite
• Samenbläschen

und weiter:

• unilateral seminal vesicle agenesis and associated abnormalities