When the posterior bladder wall protrudes downward through the anterior vaginal wall. It is known as:

When the posterior bladder wall protrudes downward through the anterior vaginal wall. It is known as: Correct Answer Cystocele

• Cystocele is a condition when the wall between the bladder and the vagina get week. This will cause the bladder to drop or sag into the vagina. It may be caused by things that increase pressure on the pelvic muscles. It further leads posterior bladder wall protrudes downward through the anterior vaginal wall. Hence Option 3 is the correct answer.
• It is also known as a prolapsed, herniated, dropped or fallen bladder

Causes

• giving birth vaginally
• having a history of pelvic surgery such as a hysterectomy
• pelvic organ prolapse repair surgery
• being overweight or obesity
• having a family history of pelvic organ prolapses

Symptoms

• a vaginal bulge 
• pressure in the vagina or pelvis
• urinary incontinence
• difficulty starting the flow of urine or hesitancy
• a slow urine stream
• feeling the need to urinate after finishing urination
• frequent or urgent urination

Additional Information

• Rectocele: A posterior vaginal prolapse is also known as a rectocele, occurs when the wall of fibrous tissue that separates the rectum from the vagina weakens.
• Pyocele  is mainly a purulent collection of fluid surrounding the particular area especially in testicle in the potential space of the tunica vaginalis and can be distinguished from a hydrocele by presence of internal echoes consistent with debris, septations.
• Bubonocoele is an incomplete hernia in the groin or also known as partial inguinal hernia.