Paravesical fossa

Anatomical space in the pelvis

The paravesical fossa is an anatomical space located in the pelvis. It is a part of the peritoneal cavity and is situated on either side of the urinary bladder. This fossa is clinically significant as it is involved in various surgical procedures and can be a site for pathological conditions.

Anatomy

The paravesical fossa is formed by the reflection of the peritoneum over the lateral aspect of the urinary bladder. It is bounded medially by the bladder and laterally by the pelvic wall. The fossa is more pronounced when the bladder is empty and tends to flatten out as the bladder fills.

Diagram of the male pelvis showing the paravesical fossa

In males, the paravesical fossa is located anterior to the rectum and is separated from the pararectal fossa by the rectovesical pouch. In females, it is situated anterior to the uterus and is separated from the pararectal fossa by the rectouterine pouch (also known as the pouch of Douglas).

Clinical Significance

The paravesical fossa is of particular interest in gynecological surgery and urology. It is a potential space where fluid can accumulate, such as in cases of ascites or pelvic inflammatory disease.

During surgical procedures, such as a hysterectomy or prostatectomy, the paravesical fossa must be navigated carefully to avoid damage to surrounding structures. It is also a site where hernias, specifically obturator hernias, can occur, although these are rare.

Surgical Considerations

In laparoscopic surgery, the paravesical fossa is often accessed to provide a clear view of the pelvic organs. Surgeons must be aware of the anatomical variations and the presence of any adhesions that may alter the typical presentation of the fossa.

Related Pages

• Peritoneum
• Urinary bladder
• Pelvic cavity
• Rectovesical pouch
• Rectouterine pouch