title: Endometrial mixed Müllerian tumor with heterologous elements following tamoxifen therapy for breast cancer: a case report and literature review.
abstract: A 67-year-old multiparous woman received 20mg tamoxifen daily for four years after surgical treatment of breast cancer. She presented with vaginal bleeding. Uterine curettage revealed a uterine MMT with heterologous elements. She was treated surgically with adjuvant radiotherapy. Tumor cells were found to be estrogen receptor negative and progesterone receptor positive. Uterine MMT may be linked to long term use of tamoxifen. A mechanism in developing MMT other than estrogen receptor pathway may be possible.
authors.affiliation: Department of Obstetrics and Gynecology, Cerrahpasa Medical School, Istanbul University, P.O. Box 11, Cerrahpasa, 34000, Istanbul, Turkey. semihkaleli@yahoo.com
authors.forename: Semih
authors.initials: S
authors.lastname: Kaleli
authors.forename: Zerrin
authors.initials: Z
authors.lastname: Calay
authors.forename: Tarik
authors.initials: T
authors.lastname: Altinok
authors.forename: Derin
authors.initials: D
authors.lastname: Kösebay
mesh_terms: D018931:Antineoplastic Agents, Hormonal / Q000627:therapeutic use*; D001943:Breast Neoplasms / Q000188:drug therapy* / Q000473:pathology; D016889:Endometrial Neoplasms / Q000209:etiology / Q000473:pathology* / Q000628:therapy; D005260:Female; D006801:Humans; D008875:Middle Aged; D018200:Mixed Tumor, Mullerian / Q000209:etiology / Q000473:pathology* / Q000628:therapy; D011960:Receptors, Estrogen / Q000378:metabolism; D011980:Receptors, Progesterone / Q000378:metabolism; D013629:Tamoxifen / Q000627:therapeutic use*
chemical_list: D018931:Antineoplastic Agents, Hormonal; D011960:Receptors, Estrogen; D011980:Receptors, Progesterone; D013629:Tamoxifen