the predictive role of body image and sexual function in quality of life after modified radical mastectomy regarding the mediating role of emotion; a cross sectional study

Background: mastectomy has negative effects on body image, sexual function, and quality of life (qol). additionally, maladaptive emotion regulation strategy is considered a trans-diagnostic mechanism underlying the psychiatric syndrome in these patients. objectives: the predictive role of body image and sexual function in qol regarding the mediating role of difficulty in emotion regulation has not been studied yet. methods: in a correlational study, from march to december 2016, among patients undergoing modified radical mastectomy (mrm) at early-stage breast cancer (bc), 90 patients were selected, using respondent-driven sampling (rds). to collect the data, the multidimensional body-self relations questionnaire (mbsrq), the persian language version of the female sexual function index (p-fsfi), qol questionnaire, and difficulties in emotion regulation scales (ders) were used. data were analyzed through pearson’s correlation coefficient, regression analysis, and path analysis, using amos and spss software version 22 and the significance criterion was considered 0.05. results: data analysis showed a direct relationship between body image and sexual function with qol, and it had an inverse relationship with difficulty in emotion regulation (p < 0.01). also, body image, sexual function, and difficulty in emotion regulation were predictors of qol (p < 0.01). besides, in predicting qol based on sexual function and body image, the difficulty in emotion regulation has a mediating role (p < 0.01). conclusions: in patients with breast cancer under mastectomy, proper sexual function, sexual attraction depending on body image, and qol were influenced by emotion regulation. reducing the difficulty in emotion regulation through emotion-focused interventions can improve qol in patients.