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Genital prolapse has many similarities to
hernias. They are both due to weakness of the supporting tissues. Genital
prolapse is due to weakness of the pelvic floor. The pelvic floor is composed of
muscles, collagen, connective tissue and fascia. A weakness of these supporting
tissues allows the tissues and organs surrounding the vagina to herniate into
the vagina resulting in prolapse. The following figure represents the normal
relationship between the pelvic floor and the organs. |
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Prolapse is named after the tissue or organ that
has lost its support and is protruding into the vagina. For example when the
urethra protrudes into the vagina this is called a urethrocele. If the bladder
prolapses this is called a cystocele. |
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Prolapse of the uterus
is uterine prolapse. Prolapse of the peritoneum or small bowel is called
enterocele. |
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Prolapse of the rectum is referred to as rectocele.
A rectocele is the bulging of the rectum forward into the vagina. |
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Lack
of support of the perineum (the area between the entrance of the vagina and anus
) causes a deficiency rather than a prolapse. |
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If the uterus has been removed and the top of the
vagina protrudes this is referred to as a vault prolapse. Multiple sites of
vaginal prolapse commonly exist together and vaginal inversion is where the
majority of the vagina protrudes outside. |
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Rectal
prolapse is prolapse of the rectum (picture rectal prolapse) through the anus and
urethral prolapse is prolapse of the urethra through the urinary outlet. |