Vesical Veins: Anatomy, Location, Drainage, Relations, Clinical Significance, MRI & CT Imaging

Topic

Vesical veins

The vesical veins are a network of veins responsible for draining the urinary bladder. They form a venous plexus within the bladder wall and submucosa, eventually joining the pelvic venous system. These veins are clinically important in pelvic surgery, urology, oncology, and radiology, as they provide pathways for venous return but may also serve as routes for the spread of malignancy or infection.

Synonyms

Vesical venous plexus
Bladder veins
Venous drainage of bladder

Location and Course

The vesical veins form a plexiform network within the walls of the urinary bladder, particularly in the submucosa and muscular layers
They drain into the vesical venous plexus, which surrounds the bladder
The plexus communicates with:
- Prostatic venous plexus in males
- Uterovaginal venous plexus in females
- Internal iliac veins via tributaries including the internal pudendal and vesical veins
Ultimately, blood is returned to the systemic circulation through the common iliac veins and inferior vena cava

Relations

Closely related to the urinary bladder wall
Communicates with prostatic plexus (males) and uterovaginal plexus (females)
Lies anterior to the rectum (in males) and anterior to the vagina (in females)
Related superiorly to the peritoneal reflections of the bladder

Function

Provides venous drainage of the urinary bladder
Helps maintain venous return from pelvic organs
Forms important venous connections between pelvic and systemic circulation
May act as a collateral pathway in pelvic venous obstruction

Clinical Significance

Venous spread of disease: Can provide a pathway for metastasis from bladder cancer, prostate cancer, or uterine tumors
Varices: Pelvic venous congestion may involve vesical veins, though less common than ovarian or rectal varices
Surgical relevance: Important consideration during bladder, prostate, or hysterectomy surgery to avoid venous injury and hemorrhage
Imaging relevance: Enlargement or irregularity may be seen in malignancy, thrombosis, or pelvic congestion syndrome

MRI Appearance

T1-weighted images:

Veins appear as low-signal tubular structures
Flowing blood usually causes signal void; thrombus may appear with higher signal intensity depending on age

T2-weighted images: