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| Figure 1: Ovarian serous borderline tumor identified in endometrial biopsy. A) The patient’s primary ovarian borderline tumor was serous in nature. B) Tissue from the patient’s endometrial biopsy consisted of proliferative-pattern endometrium seeded with serous borderline tumor. Positive expression of estrogen receptor by IHC was detected in cells from the ovarian primary (C), as well as those detected in the endometrial biopsy (D). Serous cells from both ovarian and endometrial sites similarly expressed WT1 protein (E and F, respectively). Tumor cells had been previously detected on pelvic washing fluid (G; cell block) |
