Although most female adnexal tumors of probable Wolffian origin have a benign biologic behavior, occasional cases have exhibited malignant potential. We encountered a 50-yr-old woman with an uncommon female adnexal tumors of probable Wolffian origin, which involved bilateral ovaries, invaded the ipsilateral fallopian tube, and extended to the uterine serosa. The initial histopathologic presentation caused significant confusion in pathologic diagnosis. Multiple differential diagnoses including ovarian endometrioid carcinoma, Sertoli cell tumor, and metastasis from nongynecologic organs were considered. After careful examination of the histologic findings and a thorough investigation with multiple immunohistochemical stains, the diagnosis was ultimately established. A literature review on female adnexal tumors of probable Wolffian origin including a malignant form is presented.

Abstract. Metadherin (MTDH) promotes cancer metastasis, chemoresistance, invasion and angiogenesis. Upregulation of MTDH is correlated with both progression and poor clinical outcome of many types of cancers; however, there is currently no information regarding the role of MTDH in radiation sensitivity. Here, we investigated the effects of MTDH on the radiosensitivity of cervical cancer cells using the SiHa cell line. We discovered that cervical cancer cells in which MTDH was knocked down had significantly increased radiosensitivity as measured by a clonogenic assay. MTDH knockdown cells also had increased apoptosis and a decreased proportion of cells arrested in the G2 phase after radiation treatment. MTDH knockdown also weakened the repair of DNA double-strand breaks (DSBs) induced by radiation. These results indicate that MTDH affects the radiosensitivity of cervical cancer cells and that MTDH may be a novel target to improve cervical cancer radiation response.