Serous carcinoma in uterine adenomyosis (case 1). The uterine mass showed neoplastic glands with marked atypia splitting smooth muscle fibers a, b. A small amount of benign endometrial glands with minimal endometrial stroma were found at the periphery of the tumor and within the tumor, implicating the presence of adenomyosis a, c: arrows. The identical morphological changes were seen in the left adnexus d. Both uterine and ovarian tumors showed an identical immunohistochemical profile including p53 over expression e, high Ki67 index f, and WT1 -ve g. CD10 staining highlights the presence of endometrial stroma surrounding the benign glands in the uterine tumor h. (Original magnifications: A*25; B*400; C-G*200). Serous carcinoma arising from uterine adenomyosis/adenomyotic cyst of the cervical stump: a report of 3 cases. Lu B, Chen Q, Zhang X, Cheng L - Diagnostic pathology (2016). Not Altered. CC.