Assessment of Breast Cancer Patients' Knowledge and Decisional Conflict Regarding Tamoxifen Use.

Breast cancer is the most common type of female cancer. Tamoxifen, a selective estrogen receptor modulator, is widely used to decrease breast cancer recurrence and mortality among patients. However, it also increases the risk of endometrial cancer. This study aimed to assess knowledge and decisional conflict regarding tamoxifen use. Between June and October 2014, breast cancer patients using tamoxifen were consecutively screened and requested to complete a survey including the EQ-5D, Satisfaction with Decision Scale (SWD), Decisional Conflict Scale (DCS), and a self-developed, 15-item questionnaire measuring tamoxifen-related knowledge. The study sample comprised 299 patients. The mean total knowledge score was 63.4 of a possible 100.0 (range, 13.3-93.3). While 73.9% of the participants knew that tamoxifen reduces the risk of breast cancer recurrence, only 57.9% knew that the drug increases endometrial cancer risk. A higher education level (≥ college) was associated with a higher, total knowledge score (ß = 4.291; P = 0.017). A higher knowledge score was associated with a decreased DCS score (ß = -0.366; P < 0.001). A higher SWD score was also associated with decreased decisional conflict (ß = -0.178; P < 0.001). In conclusion, the breast cancer patients with higher levels of tamoxifen-related knowledge showed lower levels of decisional conflict regarding tamoxifen use. Clinicians should provide the exact information about tamoxifen treatment to patients, based on knowledge assessment results, so as to aid patients' decision-making with minimal conflict.

Impact of lower limb lymphedema on quality of life in gynecologic cancer survivors after pelvic lymph node dissection.

OBJECTIVE: To evaluate the impact of lower limb lymphedema (LLL) on quality of life (QOL) in cervical, ovarian, and endometrial cancer survivors after pelvic lymph node dissection. STUDY DESIGN: A cross-sectional case-control study was performed using the Korean version of the Gynecologic Cancer Lymphedema Questionnaire (GCLQ-K) and the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 (EORTC QLQ-C30). In total, 25 women with LLL and 28 women without LLL completed both questionnaires. RESULTS: The GCLQ-K total symptom score and scores for swelling-general, swelling-limb, and heaviness were significantly higher in the LLL group than in the control group. In the EORTC QLQ-C30, the LLL group reported more financial difficulties compared to the control group (mean score, 16.0 vs. 6.0; P=0.035). Global health status was poorer in the LLL group with borderline statistical significance (mean score, 62.7 vs. 71.4; P=0.069). Spearman's correlations suggested that global health status in the EORTC QLQ-C30 correlated with the GCLQ-K total symptom score (in the LLL group, R=-0.64, P=0.001; in the control group, R=-0.42, P=0.027). CONCLUSIONS: QOL decreases due to LLL-related symptoms and financial difficulty in women with LLL. Well-designed prospective studies are required to confirm these findings.