Abstract
Background and purposeVaginal stenosis (VS) after pelvic radiotherapy (RT) can impair long-term quality of life. We prospectively assessed adherence and efficacy of vaginal dilator (VD) use in women after pelvic RT. Material and methodsWomen with gastrointestinal (n=63) and gynecologic (n=46) cancers self-reported use and VD size in monthly diaries for 12months after radiotherapy. Adherence was measured as actual VD use out of recommended times over 12months (3×/week×52weeks=156). ResultsAmong 109 participants, aged 28–81years (median, 58years), mean percent adherence over 12months was 42% (95% confidence interval [CI], 36–48%). Adherence was highest in the first quarter (56%), but fell to 25% by the fourth. Disease type, treatment sequence, and chemotherapy were predictors of adherence (all P<.05). Eighty-two percent maintained pre-RT VD size at 12months; of 49% with a decrease in VD size at 1month post-RT, 71% returned to pre-RT VD size at 12months. Disease type, younger age, and increased adherence at 6months were associated with maintaining or returning to pre-RT size at 12months (all P⩽.05). ConclusionVD use is effective in minimizing VS, but adherence at 12months was poor. Studies evaluating methods of improving adherence and determining the optimal frequency and duration of use are needed.
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