Classification of cystocele.

The upper 2/3 of the anterior wall of the bladder and vagina can expand downward to form cystocele. The swollen bladder is still located in the vagina with the anterior vaginal wall, which is called degree ⅰ bulging, the swollen part is exposed outside the vaginal orifice, degree ⅱ bulging, and the anterior vaginal wall is completely swollen outside the vaginal orifice, which is called degree ⅲ bulging.