The prevesical space: anatomical review and pathological conditions.

The prevesical space is the largest potential space within the pelvic extraperitoneal space. Located anterosuperior to the bladder, it has complex communications with the adjacent pelvic extraperitoneal spaces, rectus sheath, and retroperitoneum. The prevesical space is also the site of various pathological processes, and can act as a conduit for the spread of these conditions. Therefore, awareness of the detailed anatomy and potential routes of communication may help radiologists in making accurate diagnoses of pathological conditions involving the prevesical space.