an abnormal communication between the bladder and the vagina causing urinary incontinence. This may result from surgical damage to the bladder during a gynaecological operation (e.g. hysterectomy) or radiation damage following radiotherapy for pelvic malignancy. In Third World countries it is often caused by necrosis associated with prolonged obstructed labour.
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a fistula from the bladder to the vagina. See illustration.Medical dictionary. 2011.