Fig. 2

Carcinoma within endometriotic cyst wall. a Malignant epithelium lining the cyst wall and forming nests in the subepithelial stroma (H&E, × 40); b, c Malignant cells demonstrate large, hyperchromatic nuclei with irregular nuclear contours, prominent nucleoli, scant cytoplasm, and increased mitoses (H&E, B:× 100; C × 200)