The hyperplastic tissue develops from the vaginal floor cranial to the urethral orifice, but as the condition progresses (and often worsens) the tissue may involve the circumference of the vagina. The increase in size causes it to protrude through the vulval lips. | The hyperplastic tissue develops from the vaginal floor cranial to the urethral orifice, but as the condition progresses (and often worsens) the tissue may involve the circumference of the vagina. The increase in size causes it to protrude through the vulval lips. |