Ovarian endometrioid carcinoma resembling sex cord-stromal tumor: A case report

Figure 1 The mass was dark brown, and the cut surface was solid, thick-nodular, tender in texture, and grayish and gray-yellow in color.

Figure 2 Pathological examination (HE staining) of the tumor and immunohistochemical analysis. A: The tumor consisted of micro-adenoids, trabeculae, and small tubular structures that resembled granulosa cell tumor (black arrow; HE, × 100); B: Small tubular structures that resembled sertoli cell tumor (black arrow; HE, × 200); C: Areas of typical endometrioid carcinoma (black arrow; HE, × 200); D: Endometriotic cyst was seen next to the tumor (black arrow; HE, × 40); E: Tumor cells diffusely expressed CK7 (EnVision, × 400); F: Tumor cells did not express α-inhibin (EnVision, × 400).