![]() The triangular superior surface is bounded by lateral borders from the apex to the ureteric entrances, and by a posterior border which joins them. The inferolateral surfaces are not covered by peritoneum. In females the relations are similar, except that the pubovesical ligaments replace the puboprostatic ligaments. In males, each inferolateral surface is related anteriorly to the pubis and puboprostatic ligaments. This is more adherent to the bladder than to the anterior surface of the prostate, which aids reliable identification of the region of the bladder neck surgically. The anterior surface of the bladder is separated from the transversalis fascia by fat in the potential retropubic space (of Retzius). ( A, From Sobotta 2006.) B, Sagittal T2 MRI of the male pelvis showing the bladder, prostate and relations. The relationship of the bladder to the peritoneum and anterior abdominal wall on filling allows suprapubic cystotomy without intraperitoneal urinary leak. 75.2 A, The relationship of the bladder and prostate, sagittal section, male pelvis.
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