To investigate the effects of isolated posterior vaginal compartment prolapse to lower urinary tract symptoms (LUTS).

Patients who were admitted with any kind of LUTS and diagnosed with posterior compartment defects were retrospectively analyzed at urogynecology units of 2 different tertiary referral centers. Patients were included in the analysis if they had isolated posterior vaginal compartment defects with no clinically significant anterior and apical compartment defects. The control group consisted of patients with no pelvic organ prolapse (POP). All pelvic examinations were performed by the same 2 specialists. The responses to a detailed LUTS questionnaire in the unit were assessed.

Of the 340 women with posterior POP, 280 were excluded from the analysis due to combined anterior and/or apical POP with posterior POP and stage 4 POP. When we compared the symptoms between the control group and the remaining 60 patients with isolated posterior POP, there was a statistically significant difference in urge, frequency, nocturia, abnormal emptying, vaginal winding, difficult stool passage (p = 0.031, p < 0.001, p < 0.001, p = 0.022, p = 0.041, and p = 0.039, respectively).

Women with posterior POP should be carefully examined not only for anorectal or bulging symptoms but also for LUTS.