The effect of adjuvant hormonal therapy on the endometrium and ovary of breast cancer patients

Ho Sung Kim, Yong Tark Jeon, Yong Beom Kim
In: Journal of Gynecologic Oncology · 2008 · vol. 19(4) , pp. 256 · doi:10.3802/jgo.2008.19.4.256 · PMID:19471651 · W2110358709
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Abstract

OBJECTIVE: To investigate the effect of adjuvant hormonal therapy on the endometrium and ovary of breast cancer patients. METHODS: A retrospective review was performed on the 207 patients who had taken tamoxifen or anastrozole, as adjuvant hormonal therapy after breast cancer surgery between January 2003 and December 2006. Gynecologic surveillance constituted of ultrasonographic exam of the endometrial thickness and ovarian cyst formation. The patients were classified into three groups and analyzed; premenopausal/postmenopausal women receiving tamoxifen and women receiving anastrozole. RESULTS: Mean duration of follow up was 20.6+/-6.6 months. There was no difference of mean endometrial thickness before hormonal therapy among the three groups (p=0.327). In women receiving tamoxifen, the endometrium was continuously thickened in proportion to the duration of the therapy irrespective of menopausal status while it remained unchanged in women receiving anastrozole (p<0.05). Endometrial biopsies were performed in 28 patients receiving tamoxifen. The most common histologic finding was proliferative endometrium in premenopausal women (7/21) and atrophic endometrium in postmenopausal women (6/7). There was no case of endometrial cancer in both groups. Ovarian cyst was found in 32 women and the most were developed in premenopausal women receiving tamoxifen (30/32). All of them showed benign nature on transvaginal ultrasonographic findings. CONCLUSION: Women undergoing adjuvant hormonal therapy after breast cancer surgery exhibited changes in the endometrium and ovary. However most changes were not a serious problem in this study and frequent gynecologic surveillance in these patients needs further investigation.

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