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Vesicouterine pouch

The vesicouterine pouch, also called the uterovesical pouch or anterior cul-de-sac, is a peritoneal recess between the uterus and urinary bladder in females. It is the shallower of the two female pelvic peritoneal pouches, the other being the rectouterine pouch (pouch of Douglas). It has important clinical and surgical significance, especially in gynecology, obstetrics, and pelvic imaging.

Synonyms

  • Uterovesical pouch

  • Vesicouterine recess

  • Anterior cul-de-sac

Location and Boundaries

  • Superiorly: Body and anterior wall of uterus covered by peritoneum

  • Inferiorly: Dome of the urinary bladder

  • Anteriorly: Posterior surface of the bladder

  • Posteriorly: Anterior wall of uterus and cervix

Relations

  • Positioned between uterus (posteriorly) and bladder (anteriorly)

  • Superior relation to uterine body and peritoneal cavity

  • Inferior relation to bladder dome and anterior cervix

  • Related inferiorly to the anterior vaginal fornix

Function

  • Acts as a peritoneal reflection and potential space between bladder and uterus

  • Provides a surgical plane during cesarean section (incised to access lower uterine segment)

  • May collect small amounts of free fluid or blood, though less commonly than the rectouterine pouch

  • Serves as a landmark in gynecologic imaging and interventions

Clinical Significance

  • Surgical relevance: Opened during cesarean section

  • Endometriosis: Frequent site of implants and adhesions

  • Infection: May harbor pus or inflammatory exudate in pelvic inflammatory disease

  • Tumor spread: May contain peritoneal deposits in malignancy

  • Trauma: Can collect blood, though less than pouch of Douglas

MRI Appearance

T1-weighted images:

  • No fluid: Pouch is collapsed, appearing as a thin dark peritoneal line

  • Simple fluid: Appears dark (low signal intensity)

  • Fat: Appears bright, outlining the peritoneal reflections

  • Hemorrhagic/proteinaceous fluid: May appear bright

T2-weighted images:

  • No fluid: Pouch is not well visualized, only thin hypointense peritoneal lining may be seen

  • Simple fluid: Appears bright

  • Fat: Intermediate to bright, surrounding uterus and bladder

  • Endometriotic or fibrotic adhesions: Appear dark within or adjacent to pouch

STIR (Short Tau Inversion Recovery):

  • No fluid: Pouch not visualized, normal tissues suppressed

  • Fluid: Appears bright hyperintense

  • Fat: Suppressed and appears dark

  • Inflammation or implants: Bright hyperintense signal

T1 Fat-Sat Post-Contrast:

  • No fluid: Pouch appears as thin peritoneal lining with minimal or no enhancement

  • Fluid: Simple fluid does not enhance

  • Fat: Suppressed and appears dark

  • Pathology (endometriosis, tumor, inflammation): Focal or rim enhancement possible

CT Appearance

Non-Contrast CT:

  • No fluid: Pouch not visible, only potential space between bladder and uterus

  • Simple fluid: Appears as low attenuation (water density) between bladder and uterus

  • Fat: Seen as low-density tissue surrounding bladder and uterus

Post-Contrast CT:

  • No fluid: Peritoneal lining may faintly enhance, pouch remains indistinct

  • Fluid: Low attenuation persists, with possible rim enhancement if inflammatory

  • Fat: Retains low attenuation; infiltrated fat (in inflammation or tumor) shows stranding

  • Pathology: Enhancing nodules or thickening may be seen in tumor spread or endometriosis

MRI image

Vesicouterine pouch MRI sagittal anatomy image-img-00000-00000

CT image

Vesicouterine pouch ct sagittal anatomy image-img-00000-00000