Mixed epithelial carcinoma: Areas of high-grade endometrioid carcinoma showing predominantly solid growth, focal evidence of gland formation and moderate nuclear atypia (A). Other areas in the same case have serous carcinoma (B) with papillary/glandular architecture, high nuclear grade, increased mitosis and necrotic luminal debris (hematoxylin-eosin, original magnifications ×20 [A, B]).