Cystocele (Fallen Bladder)

A cystocele occurs when the wall between a woman's bladder and her vagina weakens and allows the bladder to droop into the vagina. This condition may cause discomfort and problems with emptying the bladder.

A bladder that has dropped from its normal position may cause two kinds of problems -- unwanted urine leakage and incomplete emptying of the bladder. In some women, a fallen bladder stretches the opening into the urethra, causing urine leakage when the woman coughs, sneezes, laughs, or moves in any way that puts pressure on the bladder.

A cystocele is mild -- grade 1 -- when the bladder droops only a short way into the vagina. With a more severe -- grade 2 -- cystocele, the bladder sinks far enough to reach the opening of the vagina. The most advanced -- grade 3 -- cystocele occurs when the bladder bulges out through the opening of the vagina.

Source: MedicineNet.com
http://www.medicinenet.com/cystocele_fallen_bladder/article.htm