[Severe vaginal discharge following rectal surgery]. 
Almost 50% of women who have had rectal surgery subsequently develop vaginal discharge.  Due to the recurrent and unexpected nature of this heavy discharge, they often experience it as very distressing.  Many of these women undergo extensive diagnostic tests that are mainly focused on identifying fistula formation.  If no fistula is found, in most cases no other cause for severe vaginal discharge can be demonstrated.  In our practice, we saw three patients (49-, 54- and 74-years-old, respectively) with similar severe vaginal discharge after rectal surgery and in whom no explanation for the vaginal discharge could be found.  For this reason we conducted a literature search into this condition.  Anatomical changes appear to be responsible for heavy vaginal discharge following rectal surgery.  Changes in pelvic floor muscles and compression of the distal part of the vagina may lead to pooling of fluid in the proximal part of the vagina, resulting in severe discharge.  Symptomatic treatment may reduce the symptoms.