Urinary extravasation is of peculiar interest, not only to the urologist but also to the general surgeon and general practitioner. Any clarification as to why urinary extravasation "points" in particular areas is welcome.
Anything that helps to coordinate both surgical and anatomic terms, without the addition of new terms, is a distinct advance, which will be appreciated by those doing perineal surgery. Nowhere else in urologic surgery is the skill of the specially trained urologist over the general surgeon more manifest than in perineal surgery.
THE PELVIC FLOOR, FASCIAE, SHEATHS AND PLANES
From outside inward is, first, the superficial fascia (panniculus adiposus) which is not peculiar to the perineum but is a continuation from other areas of the body. It passes into the scrotum, where it becomes replaced with involuntary muscle fibers and in this region is known as dartos muscle. Over the urogenital triangle it forms two distinct layers:
WHITE EW, RITCH CO. URINARY EXTRAVASATION IN RELATIONSHIP TO THE PELVIC AND PERINEAL FASCIA: REPORT OF CASES. JAMA. 1926;87(12):910–912. doi:10.1001/jama.1926.02680120020006
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